The mass of sulfur dioxide (SO₂) is 64.06 grams, and the mass of sulfur trioxide (SO₃) is 160.12 grams.
To calculate the masses of SO2 and SO3 in this mixture, we need to use the balanced chemical equations for the reactions and the information about the total mass of products. First, we can calculate the number of moles of sulfur that was burned by dividing the mass of the sample by its molar mass:
25,000 g / 32.06 g/mol = 777.7 mol
Next, we can use the balanced equations to determine the stoichiometry of the reactions. From the first equation, we know that 1 mole of sulfur (S) reacts to form 1 mole of sulfur dioxide (SO₂):
1 mol S + 1 mol O₂ → 1 mol SO₂
From the second equation, we know that 2 moles of sulfur (S) reacts to form 2 moles of sulfur trioxide (SO₃):
2 mol S + 3 mol O₂ → 2 mol SO₃
By using the information from the balanced equations and the number of moles of sulfur, we can find the number of moles of SO2 and SO3 that are formed:
SO₂: 1 mol S × (1 mol SO₂ / 1 mol S) = 1 mol SO₂
SO₃: 2 mol S × (2 mol SO₃ / 2 mol S) = 2 mol SO₃
Finally, we can use the number of moles of SO₂ and SO₃ to find the masses of SO₂ and SO₃ in the mixture:
SO₂: 1 mol × (64.06 g/mol) = 64.06 g
SO₃: 2 mol × (80.06 g/mol) = 160.12 g
Therefore, the mass of sulfur dioxide (SO₂) is 64.06 grams, and the mass of sulfur trioxide (SO₃) is 160.12 grams in this mixture.
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Your question seems incomplete, but I suppose the full question was:
"A 25,000 g sample of sulfur is burned. Some of the sulfur reacts to form SO₂: S + O₂ → SO₂ The rest of the sulfur reacts to form SO₃: 2 S + 3 O₂ → 2 SO₃ The total mass of products (SO₂ and SO₃) is 58.723 g. Calculate the masses of SO₂ and SO₃ in this mixture."
when placed at the same temperature, compare the entropy of 10 mole of ar(g) at 10.0 atm and 10 mole of ar(g) at 0.5 atm. which system has a higher entropy? group of answer choices 10 mole of ar(g) at 10.0 atm 10 mole of ar(g) at 0.5 atm there is not enough information. they are the same in entropy.
When placed at the same temperature, the entropy of 10 mole of Ar(g) at 10.0 atm and the 10 mole of Ar(g) at 0.5 atm. The system has a higher entropy is 10 mole of Ar(g) at 0.5 atm.
The entropy is the measure the randomness of the of the system. the measure of the system's thermal energy per unit the temperature that is not available for doing the useful work.
The Entropy will increases with temperature at the constant pressure. The pressure increases leads to the higher degree of the order in the molecular arrangement. so, the entropy decreases with the increasing pressure.
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why are carbon and silicon especially relevant to us
Carbon and silicon are especially relevant to us because they are key building blocks of many important materials and technologies in our daily lives.
Carbon is a versatile element that is found in many different forms, such as graphite, diamond, and carbon fiber, and is used in a wide range of applications. For example, it is used as a lubricant, a fuel, and a structural material in the production of steel. Carbon is also the basis of all life on earth and is an essential component of DNA, proteins, and cell membranes.
Silicon is a semiconductor material that is widely used in the electronics industry. It is the basis of most computer chips and is also used in solar cells, transistors, and other electronic devices. Silicon is also used in the production of glass, ceramics and other materials.
Furthermore, carbon and silicon are the basis of many organic compounds and materials, which are widely used in the chemical industry, from drugs to plastics. They are also widely used in the energy industry in batteries and fuel cells.
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Select all the correct images.
Select the atoms that belong to the same element.
16 protons 16 neutrons
14 protons 14neutrons
16 electrons
11 protons 10 neutrons
13 protons 14 neutrons 13 electrons
14electrons
11protons
12 neutrons
11 electrons
11electrons
Isotopes are atoms that belong to the same element: 11 protons, 10 neutrons, 11 electrons, 13 protons 14 neutrons, and 13 electrons
What are isotopes?An isotope is one of two or more atom types of a chemical element that share the same atomic number, position on the periodic table, chemical behavior, and physical properties, but differ in atomic mass. One or more isotopes can be found in any chemical element. The number of protons in an atom's nucleus is the first criterion for determining its identity and labeling.
The observation that all atoms with the same atomic number have roughly the same chemical properties—if not exactly the same—gives this atomic number its significance. The symbol Z is typically used to represent this number. An ingot of pure uranium, for instance, only contains atomic number 92 atoms. Each atomic number has a place on the periodic table of elements, and each of these places is labeled with the element's common name, like calcium, radon, or uranium.
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Rain from the atmosphere caused the water to fall. This water loosened the soil and rock in the geosphere. The landslide negatively affected nearby plants or animals in the biosphere, and it dumped debris into the river, affecting the hydrosphere.
Answer:
How are the spheres of Earth interrelated? The four spheres of Earth are closely connected to each other. Birds(biosphere) fly through the air (atmosphere), and water (hydrosphere) flows through the soil (lithosphere or geosphere). The spheres of the earth are closely connected to each other.
if he gas has an average kinetic energy of 8150 j/mol under certain conditions, what is the root mean square speed of o2 gas molecules under the same conditions?
If He gas has an average kinetic energy of the 8150 J/mol under the certain conditions, the root mean square speed of O₂ gas molecules under the same conditions is 3.0 × 10²⁹ m/s.
The average kinetic energy is expressed as :
K.E = 3 R T / 2
8150 = ( 3 × 8.314 × T ) / 2
16300 = 24.94 T
T = 653.5 K
The root mean square speed, Vrms = √(3kNaT ) /M
The root mean square speed, Vrms = √ ( 3 × 1.38 × 10⁻²³ × 6.023 × 10²³ ×
653.5 ) / 5.31 × 10⁻²⁶
The root mean square speed, Vrms = 3.0 × 10²⁹ m/s.
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(ii) Ga bubble of __________ will be evolved at the electrode in
the given experiment.
a) Oxygen and Hydrogen
b) Carbon dioxide and Hydrogen
c) Oxygen and Carbon dioxide
d) None of thee
a) Oxygen and Hydrogen That is accurate, indeed. An oxygen and hydrogen gas bubble will develop at the electrode in the experiment. This is due to the fact that during the electrolysis process, a material that
The chemical element with the atomic number 8 and symbol O is called oxygen. It belongs to the periodic table's chalcogen group, is a very reactive nonmetal, and an oxidising agent that easily produces oxides with most elements as well as other compounds. After hydrogen and helium, oxygen is the third most plentiful element in the universe and the most prevalent element on Earth. Two atoms of the element combine to generate dioxygen, a colourless and odourless diatomic gas with the formula O 2, at ordinary temperature and pressure. The Earth's atmosphere is now made up of 20.95% diatomic oxygen gas, however this has fluctuated significantly over a very long time. In the form of oxides, oxygen makes up over half of the Earth's crust. [3]
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what do you call water without much calcium and magnesium
Water without much Calcium and Magnesium is known as Soft water.
Soft water has low concentration of Calcium carbonate and other ions. These are free from dissolved salts of metals like Calcium, Magnesium and other metals.
Hard water and soft water are differentiated based on their amount of Calcium and Magnesium constituents. Hard water has mineral stains , spots and feeling a film in your hands while washing it.
Soft water makes our clothes cleaner , water pressure heavily in the hands and a slight of Sodium taste in drinking water.
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how long does it take for a serious burn to occur when the temperature of a liquid is 140 f degrees?
Answer:
When a liquid is 140° F it really only takes five or less seconds to produce a serious burn.
after a long period of time what does the carbon in the sediment become
Answer:
When animals die, they decompose and when they decompose their remains become seditment thus trapping the stored carbon. This sediment sometimes forms fossil fuels like coal and oil which in turn release carbon back into the atmosphere when the fossil fuels are burned.
A gas consisting of 25. 6 moles of carbon fills a volume of 128 L and has a pressure of 135 kPa. Find the temperature of the gas in °C
A gas consisting of 25. 6 moles of carbon fills a volume of 128 L and has a pressure of 135 kPa. The temperature of the gas is -270.58°C.
The temperature of a gas can be found using the Ideal Gas Law, which states that PV = nRT. The Ideal Gas Law relates the pressure, volume, and temperature of a gas to the number of moles of the gas present.
In this case, we are given the number of moles of the gas (n = 25.6 moles), the volume of the gas (V = 128 L), and the pressure of the gas (P = 135 kPa). We can use these values to find the temperature of the gas in degrees Celsius.
First, we need to convert the pressure from kPa to Pa. To do this, we multiply the pressure in kPa by 1000:
P = 135 kPa x 1000 Pa/kPa = 135 000 Pa
We can now substitute this value into the Ideal Gas Law:
PV = nRT
T = (nRT)/P
T = (25.6 mol * 8.314 J/mol.K) / (135 000 Pa)
T = 2.57 K
To convert from Kelvin to Celsius, we subtract 273.15 from the temperature in Kelvin:
T(°C) = T(K) - 273.15
T(°C) = 2.57 K - 273.15 = -270.58°C
So the temperature of the gas is -270.58°C
Please note that this is an ideal gas equation and it will not work for real gases. Also, the temperature is extremely low, it's unlikely that the gas can exist at that temperature.
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The gases in a hair spray can are at a temperature of 27 degrees C and a pressure of 206. 843 kPa. If the gases in the can reach a pressure of 620. 528 kPa, the can will explode. To what temperature must the gases be raised in order for the can to explode?
a. 273 0C.
b. 450 0C.
c. 630 0C.
d. 360 0C
630°C of temperature must be attained by the gases.
Gay-law Lussac's which was found in 1808 and published in 1809, is the term used to describe Joseph-Louis Gay-law Lussac's of combining volumes of gases. It can also describe the relationship between a gas's volume and absolute temperature under constant pressure. Simple whole numbers can be used to indicate the volume ratio of the reactant gases to the gaseous products.
This is an illustration of Gay-Law Lussac's since the volume is constant but the pressure and temperature are changing:
[tex]P1/T1=P2/T2[/tex]
The formula above may be rearranged to yield
T2=T1*P2/P1
Your data include:
P1=206. 843 kPa
T1=(27+273.15)K=300.15K
P2= 620. 528 kPa
T2=?
T 2 = 300.15 K* 620. 528 kPa/ 206. 843 kPa= 900.45K = 627.3 °C
Near to 627.3 °C the temerature is 630 °C
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Which name is given to a reaction in which the number of each type of atom on one side of the equation is equal to the number of the same kind of atoms on the other side of the equation?
A balanced chemical equation describes a reaction where the number of each type of atom on one side of the equation is equal to the number of the same sort of atoms on the other side of the equation.
In other words, the number of atoms of each element is the same on both sides of the equation, obeying the rule of conservation of mass.
For instance, the balanced formula for the combustion of oxygen and methane is CH4 + 2 O2 -> CO2 + 2 H2O.
On either side of the equation, there are 1 carbon atom, 4 hydrogen atoms, and 4 oxygen atoms.
The chemical equation must be in balance in order to employ the right quantity of reactants and products and to forecast how much reactant will be used and how much product will be produced.
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Analyze the given diagram of the carbon cycle.
An image of carbon cycle is shown. The sun, a cloud, two trees, one towards left and the other towards right, an animal, lake, and a factory are included. Arrow A points from the sun to the left tree. Arrow B points from the air above the clouds to the left tree. Arrow C points from the factory towards the air above the clouds. Arrow D points from the air to the lake labeled Carbonates in Water. Arrow E points from the label Dead Organism under the animal to label Fossils and Fossil Fuels. Arrow F points from the right tree to the air.
Part 1: Which process does arrow A represent?
Part 2: Which type of energy transformation does arrow A represent?
Part 3: Justify why this process is a recycling of carbon in the carbon cycle.
Use complete sentences to explain your answer.
Answer;
1.Arrow A represents the process of photosynthesis.
2.This shows the process of light energy converting into chemical energy
3.Photosynthesis absorbs carbon dioxide and converts it into energy as biomass, so that its able to be used for something else later on.
Explanation:
Part I
At location G, the process of combustion is taking place where hydrocarbon or organic carbon from the fossil fuel is burnt in the presence of oxygen to produce carbon dioxide and water as the products.
CxHy = CO₂ + H₂O
Part II
At point G there is no transformation of energy since during the process of combustion energy will still be stored in form of chemical energy in the bonds of carbon Iv oxide and the water produced during the reaction.
Part III
The process shows recycling of carbon in the carbon cycle. This is because carbon from living organisms is cycled to non living organisms. When plants and animals die and are buried deep in the ground, they are then slowly converted to fossil fuels which contain organic hydrocarbon compounds including petrol, kerosene and other compounds. Then the fossils are used in the industries and undergoes combustion releasing carbon iv oxide which is then released to the atmosphere and used by the plants and animals. The process starts once again.
it the same:]
Photosynthesis is a process by which plants absorb carbon dioxide from the atmosphere and use energy from the Sun to convert it into glucose.
Which process does arrow A represent?Arrow A represents photosynthesis.Arrow A represents a transformation from light energy from the sun to chemical energy stored in the tree.The process of photosynthesis converts light energy from the sun into chemical energy for the tree, which captures carbon from the air. This carbon is then recycled through the carbon cycle as it is respired out of the tree, released into the air, absorbed by the water, and eventually released back into the atmosphere.Arrow A represents photosynthesis.Arrow A represents a transformation of light energy from the Sun into chemical energy stored in the form of carbohydrates in the tree.This process is a critical part of the carbon cycle because it removes carbon dioxide from the atmosphere and stores it in the form of carbohydrates in the plant.The plant can then use the glucose to produce energy and grow, or it can be consumed by animals and eventually broken down into carbon dioxide and returned to the atmosphere. This cycle of removing carbon dioxide from the atmosphere and then returning it is essential to maintaining the balance of carbon in the environment.To learn more about Photosynthesis refer to:
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what are the phases of the cell cycle
directions: complete this table by writing a description in each space provided
phase of the cell cycle
phase | stage | description |
interphase | G1 | 1.
| S | 2.
| G2 |3.
mitotic phase | mitosis |4.
| cytokinesis| 5.
The G1, S, and G2 stages of interphase, the mitotic phases of mitosis and cytokinesis, and the G0 phase make up the cell cycle.
What are the phases of the cell cycle and describe each phase?The cell cycle is a four-step process in which the cell grows in size (gap 1, or G1, stage), duplicates its DNA (synthesis, or S, stage), gets ready to divide (gap 2, or G2, stage), and divides (gap 3, or S, stage) (mitosis, or M, stage). The period between cell divisions is represented by the stages G1, S, and G2, which together make up interphase.
The process through which cells multiply and divide into two new cells is known as the cell cycle. G1, S, G2, and M are the several cell cycle stages. The cell is getting ready to divide in the G1 stage. The cell next enters the S phase, where it duplicates all the DNA, to accomplish this.
There are five of these phases: prophase, prometaphase, metaphase, anaphase, and telophase. As the final physical cell division after telophase, cytokinesis is frequently regarded as the sixth stage of mitosis.
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Heat is transferred only when___________________.
Answer: the direction of decreasing temperature
Find the balanced equation for “Aqueous sodium hydroxide and carbon dioxide gas yields sodium carbonate solution and liquid”
Answer:
2NaOH + CO2 -----> Na2CO3 + H2O
Explanation:
Carbon dioxide is acid anhydride, so reacts like and acid with Sodium hydroxide is neutralisation reaction to form salt and water
Answers for Predicting Products of Chemical Reactions
The prediction of chemical reaction is CO2 and H2O are the end products of every combustion reaction involving hydrocarbons or hydrogen-carbon-oxygen molecules (assuming a complete reaction).
a. C6H12 + 9O2 6CO2 + 6H2O during combustion
b. Combustion: 8CO2 + 6H2O from 2C4H6 + 11O2
c. Combustion: 6CO2 + 5H2O + C6H10O3 + 7O2
The predicting products of chemical reactions is The ability of human chemists to predict reactions' outcomes with acceptable certainty is amazing. These forecasts are, of course, founded on fundamental physical principles, but they are unquestionably not based on meticulous numerical calculations.
For example:-
1. Mg + I2 becomes MgI2.
The product must have a 1:2 cation:anion ratio since Mg can only form Mg2+ and I can only form I-.
2. Dual displacement: CuS + 2HCl CuCl2 + H2S
Be aware that the substance is not H2Cl2. Recognizing that CuCl2 is composed of three ions—Cu2+ and two Cl-—is crucial.
3. NaOH + HClO4 NaClO4 + H2O, or double displacement
You must understand that perchlorate (ClO4-) and hydroxide (OH-) are polyatomic ions in this question and won't disintegrate. Additionally, as this is an acid-base reaction, the end products ought to be salt and water.
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Complete question:
What is predicting product of chemical reaction.
Combustion:
a. C6H12 + O2 =
b. Combustion: C4H6 + O2 =
c. Combustion: C6H10O3 + O2 =
45 points. I need help with chemistry. Will make the best answer the brainliest.
The entropy change of the given reactions can be determined from the entropies of each individual gases. The entropy change of the first reaction is - 389.74 J.
What is entropy?Entropy of a system is the measure of the total randomness of system. As the number of moles increases, the entropy increases.
The entropy change of a reaction is given as follows:
ΔSrxn = ∑s (products) - ∑s (reactants)
For the given reactions, the entropy of each reactants and products are given and use their number of moles to calculate the reaction entropies as follows:
For reaction 1:
(2 ×192.5 J) - [(3×130.58) + (2× 191.5 J)] = - 389.74 J/K
Reaction 2:
(2 ×188.83 J + 213.6 J) - 186.3 J + (2× 205 J)] = - 5.04 J/K
Reaction 3:
(2 ×220 J) - 205 + (2× 191.5 J)] = - 148 J/K
Therefore, the entropy change of the given reactions can be determined in this way. For all these reactions, the entropy is decreasing.
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Question: Rank the following radicals in order of increasing stability.
Answer
The rank of the given radicals in the increasing order of stability is as follows:
Consider the following techniques to improve stability: mproving the foundation: Make certain that the foundation is strong, stable, and capable of sustaining the structure.
Maintaining balance: Keep the structure's weight equally distributed and balanced. Stress reduction: Avoid overstressing the structure and minimize current stress by suitable support and reinforcement. Material updates: Use materials that are recognized to be long-lasting and durable. Regular maintenance entails inspecting and maintaining the structure on a regular basis in order to discover and treat any concerns before they become big difficulties. Reduce dynamic loads: Keep vibrations and other dynamic loads to a minimum. Using suitable design: Ensure that the design takes into account the structure's stability needs. This is not a complete list, and the best method for boosting.
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Use the periodic table to determine the electron configuration for Si and Y in noble-gas notation. Si:
answers:
si=ne 3s23p4
y= kr 5s24d2
The electronic configuration of the elements Si and Y in noble-gas notation is given below:
Si = [Ne] 3s²3p⁴Y= [Kr] 4d¹5s²What is the electronic configuration of Si and Y?The arrangement of an atom's or molecule's electrons in their respective orbitals is known as its electron configuration.
The electronic configuration of Si and Y are derived from their atomic numbers.
The atomic number of Si is 14
The atomic number of Y is 39
The electronic configuration of Si is 1s²2s²2p⁶3s²3p²
or [Ne] 3s²3p⁴ in noble-gas notation.
The electronic configuration of Y is 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹5s²
or [Kr] 4d¹5s² in noble-gas notation.
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What is the formula for
Fe+2 + (SO4)-2 ?
Answer:
FeSO4 is the formula for iron(II) sulfate.
3. If you had 152.5 g of CO and 24.5 g of H₂ gas, how many grams of CH₂OH could be produced?
CO+ _
CH₂OH
H₂ →→
H2
→
Find the number of moles in each reactant in the formula CO + 2 H2 CH3OH.
How to find the calculation?The reactant that yields the least amount of methanol is known as the limiting reagent. The limiting reagent is CO because it yields less CH3OH than other chemicals.1 mol CO divided by 28.01g CO to equal 152500 g CO results in 5444 mol CO.24500 g H2 x 1 mol H2 / 2.02 g H2 = 12129 mol H2In order to produce one mol of CH3OH, one mol of CO and two mol of H2 are required, according to the 1:2 mol ratio between CO and H2.However, there are only 5444 mol of CO, whereas 6064 mol of CH3OH can be produced by H2.1 mole of CH3OH divided by 5444 moles of CH3OH results in a number.= 174371 g = 174.4 kg.
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Draw the missing intermediate and add curved arrows for the production of phenylethyne by the double dehydrohalogenation of 2,2-dibromoethylbenzene. Note that, although stereochemistry is not graded, it is an important part of the mechanism
Illustration of the missing intermediate and add curved arrows for the production of phenylethyne by the double dehydrohalogenation of 2,2-dibromoethylbenzene is given in the attachment.
Dehydrohalogenation is an elimination reaction used in chemistry to get rid of a hydrogen halide from a substrate. Although the reaction is frequently linked to the synthesis of alkenes, it has additional uses.
Alkyl halides have historically served as the substrates for dehydrohalogenations. Halides without a C-H bond on an adjacent carbon are not acceptable substrates for alkyl halides because they cannot produce an alkene.
Halides made of aryl are similarly inappropriate. Chlorobenzene dehydrohalogenates when subjected to a strong base, releasing phenol through a benzyne intermediate. Many alkyl chlorides change into the equivalent alkene when treated with a strong base. It is a kind of elimination reaction and is also known as a-elimination reaction.
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What do you need to know to convert among the count,mass,and volume of something?
To convert between a substance's count, mass, and volume, you must understand the following information: The substance's molar mass is expressed as the weight of one mole.
which is often expressed in grams per mole (g/mol). You may translate between the quantity of moles and the substance's mass by knowing the molar mass of a substance. The substance's density: The unit of measurement for density is grams per cubic centimeter (g/cm3), which represents the mass of a material per unit of volume. You can convert between a material's mass and volume by knowing the density of the substance. The compound's molar volume is: The volume of a molar is one.Typically, a chemical is measured in liters per mole (L/mol) units. You may convert between the quantity of moles and the substance's volume by knowing the molar volume of a substance.The number of atoms or molecules in one mole of a material is known as the Avogadro number.
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A representative element donates or accepts electron to gain stability. This is known as the ___ rule
A representative element donates or accepts electron to gain stability. This is known as the octet rule. The octet rule states that atoms tend to gain or lose electrons in order.
This process is called electron configurations and is the reason behind the formation of ions and chemical bonding.According to the octet rule, atoms usually gain or lose electrons in order to have eight electrons in their valence shell, which is their outermost energy level. For the majority of elements, an eight-electron complete valence shell is the most stable electron configuration. This is so because an atom's valence shell, which is its outermost shell, contains the electrons that participate in chemical reactions and bonding. To reach a complete valence shell, which is more stable than a partially filled shell, atoms will lose, acquire, or share electrons. It is for this reason that ions form and atoms interact chemically. Understanding and predicting the chemical behavior of elements is made easier by the octet rule.
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why would iron be useful when building a rocket
Answer: to keep it strong
Explanation:
What is sodium bicarbonate is is soluble in water
In water, sodium bicarbonate dissolves to form sodium and bicarbonate which makes the solution alkaline, which means it can neutralize acid.
What is an acid?An acid is described as a molecule or ion capable of either donating a proton, known as a Brønsted–Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis acid.
sodium bicarbonate is less soluble in water because the density of the water is more than the density of the sodium bicarbonate.
Acids are known to produce hydrogen ions and bases accept hydrogen ions.
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Study the melting points for the different materials in the table. Describe the types of bonds that the different materials have and explain how these bonds account for the differences in melting point. Material Melting point (K) at 1 atm pressure Lead 601, Mercury 234, Sodium Chloride 1074, Water 273
The ionic bonds in sodium chloride is the strongest bond as such the substance has the highest boiling point while the mercury has the weakest bond and the least melting point.
What is the melting points?We have to note that the melting point of the solid has to do with the temperature at which the solid is converted into the liquid state. It is the temperature at which the bonds that are holding the particles of the substance would be broken.
In this case, we can see that the trends in the boiling points does reveal the kind of bonding intercation that we have in the compound. Given that there are strong ionic bonds in sodium chloride it has the highest boiling point.
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what is the molarity of a solution prepared by mixing 25.0 ml of 0.375 m nacl with 42.0 ml of a 0.632 m nacl solution?
The molarity of the solution prepared by mixing 25.0 mL of 0.375 M NaCl with 42.0 mL of a 0.632 M NaCl is 0.536 M
How do I determine the molarity of the solution?We'll begin by obtaining the mole of NaCl in both solutions. Details below:
For 0.375 M NaCl:
Volume = 25 mL = 25 / 1000 = 0.025 LMolarity = 0.375 MNumber of mole of NaCl =?Molarity = number of mole / Volume
Cross multiply
Number of mole = molarity × volume
Number of mole of NaCl = 0.375 × 0.025
Number of mole of NaCl = 0.009375 mole
For 0.632 M NaCl:
Volume = 42 mL = 42 / 1000 = 0.042 LMolarity = 0.632 MNumber of mole of NaCl =?Molarity = number of mole / Volume
Cross multiply
Number of mole = molarity × volume
Number of mole of NaCl = 0.632 × 0.042
Number of mole of NaCl = 0.026544 mole
Finally, we shall determine the molarity of the solution. Details below:
Total mole of NaCl = 0.009375 + 0.026544 = 0.035919 moleTotal volume = 0.025 + 0.042 = 0.067 LMolarity = ?Molarity = mole / volume
Molarity = 0.035919 / 0.067
Molarity = 0.536 M
Thus, the molarity of the solution is 0.536 M
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Suppose you are performing a hydroboration oxidation of 1-hexene to form 1-hexanol. Your reaction includes 0. 93 mL of 1-hexene, which has a density of 0. 673 g/mL, 1. 79 mL of 1. 00 M borane in THF, and 1. 23 mL of 30. 0% m/v hydrogen peroxide. What is the theoretical yield of 1-hexanol (in g) for the reaction
From the stoichiometry of the reaction 0.18 g of 1-hexanol is formed.by hydroboration oxidation .
By hydroboration, which involves diborane in tetrahydrofuran followed by treatments with hydrogen peroxide and sodium hydroxide, 1-hexene may be changed into 1-hexanol: Hexan-1-ol An alkene can become an alcohol by a two-step hydration reaction called the hydroboration-oxidation reaction.
The theoretical yield of a compound is its yield based on the stoichiometry of the reaction.
We must now obtain the number of moles of each reactant:
For hexane;
Mass of hexane = Density × volume = 93 mL × 0.673 g/mL = 62.589 g
Number of moles = 0.55 g/84 g/mol = 0.0065 moles
For borane;
Number of moles = concentration × volume = 1.00 M × 1. 79 mL/1000 L = 0.00179 moles
Since the reaction is 1:1, borane is the limiting reactant, hence;
Number of moles of 1-hexanol = 0.00179 moles × 102 g/mol = 0.18 g
In the procedure, the double bond is replaced by the simultaneous addition of a hydrogen and a hydroxyl group.
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