A gas occupies 40.0 mL at 150 K. What volume does it occupy at 300 K,
assuming pressure is constant? *
Answer:
.08 L or 80 ml
Explanation:
Use the equation V/t = V/t.
.04L / 150K = V / 300K
.04 / 150 * 300 = V
.08 L or 80 ml
What is a magnet?(2 points)
O A tool used to help determine if certain materials are magnetic
O A tool used to help determine if certain materials have a large mass
O A tool used to help determine if materials are the color blue
O A tool used to help determine if materials use the force of gravity
In completing a Fischer Esterification experiment using acetic acid and unknown alcohol catalyzed by sulfuric acid a student starts with excess acetic acid with the intention of shifting the equilibrium towards formation of product. Identify the law used to predict this effect.
Answer:
The equilibrium law
Explanation:
According to the equilibrium law , when [tex]$\text{concentration}$[/tex] of any of the reactants or the products in the reaction at an equilibrium state, is changed, then it changes the composition of equilibrium mixture in order to minimize the effect of
Acetic acid (in excess) + [tex]$\text{alcohol}$[/tex] ⇄ [tex]$\text{ester}$[/tex] + water
[tex]$\text{Fischer esterification}$[/tex] is a reaction which involves the equilibrium. So to force the reaction towards the side of [tex]$\text{ester}$[/tex], one of the reactant is taken in excess. All this can be explained easily by applying the equilibrium law.
Consider this reaction: HCO3− + H2S → H2CO3 + HS− Which is the Bronsted-Lowry base? H2S HCO3- HS– H2CO3
Answer:
hco3
Explanation: bc i said so
Which of the following is a true statement regarding living organisms? All living things- (A. Require oxygen to breath)
(B. Are capable of intelligent thought)
(C.are made up of one or more cells)
(D.have a lifespan of at least on weak?
Answer:
A or C
Explanation:
Answer:
are made up of one or more cells
Explanation:
A cell is the building block of life of any organism. Therefore, an organism simply cannot exist if it has no cells
How many moles of h2o2 are required to make 6 moles of oxygen gas?
Answer: 2 moles
Hydrogen has an atomic mass of 1.008 g/mol and oxygen has an atomic mass of 15.9993 g/mol. According to the formula there are 2 moles of hydrogen and 2 moles of oxygen in each hydrogen peroxide molecule.
an example of binary compound is
Answer:
Explanation:
An example of binary compund is ZnI2 is zinc iodide
Answer:
https://sciencenotes.org/what-is-a-binary-compound-definition-and-examples/
Explanation:
https://sciencenotes.org/what-is-a-binary-compound-definition-and-examples/
Determine the number of atoms in 285 amu of F.
it is either 10, 15, 20 or 25 please help asap
Answer:
I have no idea but I think its 15 ;-;
Explanation:
how much 0.100 m h2so4 are needed to make 25.0 ml of 0.00500 m solution
Answer:
3) 1.25
Explanation:
I had the same question and somehow got it right :)
The new volume will be determined by molarity and which will be 1.25 ml.
What is volume?The volume of an object is just a measurement of how much space it takes up.
What is Molarity?
The molality refers to the moles of a solute in relation to the mass of the solvent, whereas the molarity refers to the moles of a solute in based on the volume of the solution. It can be denoted by M.
The formula of Molarity is
[tex]M_{1} V_{1} =M_{2}V_{2}[/tex]
where, M is molarity and V is volume.
Calculation of volume.
It is given that,[tex]M_{1} = 0.1 M, M_{2} =0.0025 M.[/tex]
Now, puts the value of given data in molarity equation.
[tex]M_{1} V_{1} = M_{2} V_{2}[/tex]
[tex]V_{1} = M_{2} V_{2} /M_{1}[/tex]
[tex]V_{1}[/tex] = 0.005×25/0.1 = 1.25 ml
Therefore, the correct answer will be option 3.
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Help please!!!!!!!!!!!!
Answering so you can give the other person brainliest!
The students in Mrs. Smith's class used pH paper to measure the acidity levels between different samples of breakfast drinks. The pH
measurements ranged from 3.27 to 3.88 on the pH scale. Based on this range, we can determine that the most acidic solution had a pH of:
Answer:
The most acidic solution had a pH of 3.27.
Explanation:
In order to solve this problem we need to keep in mind that the lower the pH of a solution is, the more acidic the solution is.
If among the pH readings across the measured breakfast drinks, the lowest one was 3.27 (as the problem tells us with the range), then that drink was the most acidic one.
Conversely, the least acidic one had a pH of 3.88.
what would cause the different liquids to have different density
Answer:
The same amount of two different liquids you used in the container will have different densities because they have different masses. The liquids that weigh more (a higher density) will sink below the liquids that weigh less (a lower density).
Material: Density (g/cm3)
Light Corn Syrup: 1.33
Vegetable Oil: 0.92
Explanation:
Science
TTILA U.
16. What do you mean by 60 watt written on electric
bulb. Write electronic configuration of calcium by
sub-shell method.
Answer:
Explanation:
If it is said that an electric bulb contains 60 watts, that implies that the electric bulb will have to consume a required amount of energy of about 60 joules in a second.
Mathematically:
Power rating = Energy consumed ÷ time
The electronic configuration typically implies the arrangement of electrons in atomic orbitals. The electronic configuration of Calcium (Ca) in it subshell method is:
[tex]\mathbf{Ca (20) = 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 }[/tex]
Would a burning candle have potential or kinetic energy?
Answer:
When the candle is lit and burning, it has kinetic energy.
Explanation:
please smash brainliest on my doorstep
cantidad de moles que hay en 145 gramos de nitrato de bario
Answer:
ydrt
Explanation:
u
WHAT STATEMENT IS TRYE ABOUT THE PRESENCE OF CI IN SOLUTION?
Answer:
The answer is C.
Explanation:
Hello there!
In this case, since the ionization of HCl to H+ and Cl- ions decrease the pH of a solution as it gets more acidic due to the H+ ions; it is possible to infer that the presence of Cl- ions in the solution does not modify the pH of the solution because it is not able to react with water to form HCl and then undergo the aforementioned reaction because HCl is a strong acid so the ions are not able to undergo the reverse ionization.
In such a way, the answer will be C.
Regards!
Convert 360 k to Celsius
Answer:
86.85°C
Explanation:
K = °C + 273.15
360K − 273.15 = 86.85°C ≈ 87°C
In the number 48.93, which digit is estimated?
In the number 48.93, the digit that is estimated is the digit "9."
In the number 48.93, the digit "9" is estimated because it falls after the decimal point. When a decimal number, the digits to the right of the decimal point represent fractional or decimal values.
These digits can be estimated or rounded to a certain degree of accuracy, depending on the context or the desired level of precision.
The digit "9" is the last digit after the decimal point, it is likely an estimated value. It means that the actual value could be slightly higher or lower than 9, depending on the level of precision required.
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PLEASE help, ill mark brainliest. an inflated balloon is left outside overnight. initially, it has a volume of 2.89L when the temperature 32.4 degree celsius and the pressure is 101.87 kPa.the temperature falls to 22.3 degree celsius and the pressure remains constant. what is the volume now?
a) what temperature scale must be used?
b) calculate the new volume
Answer:
B) 2.85 ∘C
Explanation:
A) Kelvin
QUESTION 1 (POLL)
Straighten your arm away from you, and then bend it back
towards you. What is happening with your arm muscles? Check
all that apply.
They contract and relax.
They move my bones.
They get shorter and longer with each
movement.
They stay the same.
Answer:
They stay the same
Explanation:
why does glucose more soluble in water comparing to benzoic acid?
Answer:
Because it desolves in water very well
Which binary molecular compound includes an element with five atoms of one element?
Answer:
For example, N2O4 is referred to as dinitrogen tetroxide, not dinitrogen tetraoxide, and CO is called carbon monoxide, not carbon monooxide.
...
Binary molecular (covalent) compounds.
Prefixes used in chemical nomenclature
prefix number of atoms
tetra- 4
penta- 5
hexa- 6
Explanation:
A graduated cylinder has 65 mL of water at 25 oC. When 45.0 g of an unknow solid is dropped into the graduated cylinder, the liquid surface reaches a volume of 75.8 mL. What is the density of the unknown solid
Answer:
4.17 g/mL
Explanation:
In order to determine the density of the solid, we need to know both its mass and its volume.
The mass is already given to us by the problem, 45.0 g.
As for the volume, we can determine it by using Archimedes' principle. It states that the volume of water displaced by an object when submerged is equal to the object's volume.
Water displaced = 75.8 mL - 65 mL = 10.8 mLFinally we calculate the density of the solid:
Density = mass / volume = 45.0 g / 10.8 mLDensity = 4.17 g/mLNaOH dissociation equation
Answer:
This can be represented by the chemical equation: NaOH H2O→ OH- + Na.
How could renewable energy sources be used to heat and cool a house?
draw the structure of ethoxyethane
Answer:
i couldnt draw it but here is a picture
Explanation:
Which of the following representations best shows the shape of a molecule?
a. drawing or model
b. empirical formula
c. molecular formula
d. structural formula
Answer:
The structural formula
Explanation:
Dear student, the image of the question is missing. SO, we will just explain from the given options; i.e. the perfect and correct option that usually explains the shape of a molecule.
TO start with drawing or model.
A drawing or model is usually a sketch of a diagram.
The empirical formula simply means the relative numerical ratios of various atoms in a compound which can be determined by an empirical formula. The ratios are also valid at the molar level too. It gives information about the element that is found in a compound.
The molecular formula showcases the types, numbers, and kinds of atoms of respective elements present in the molecular compound.
The structural formula showcases the structure which gives the shape of the molecular structure of the compound. It shows the linkage and the connection between one element present in the structure to another.
which types of energy are generated when a light bulb is turned on?
A.Pontential and electrical
B.Kinetic and electrical
Answer:
B
Explanation:
Kinetic and electrical energy are generated when a light bulb is turned on
Aluminum chloride, AlCl3, is an inexpensive reagent used in many industrial processes. It is made by treating scrap aluminum with chlorine according to the following equation. Please balance the equation.
__2_ Al (s) + 3___ Cl2(g) _2___ AlCl3(s)
If you start with 3.11 g of Al and 5.32 g of Cl2, which reagent is limiting? How many grams of AlCl3 can be produced? During an experiment you obtained 5.57 g of AlCl3, what was your percent yield?
Answer:
Cl₂ the limiting reactant.
6.67g of AlCl₃ can be produced.
83.5% is percent yield
Explanation:
Based on the reaction:
2 Al + 3Cl₂ → 2AlCl₃
2 moles of aluminium react with 3 moles of chlorine.
To solve this question we must find the moles of each reactant in order to find limiting reactant. With limiting reactant we can find theoretical yield. Percent yield is:
Actual yield (5.57g) / Theoretical yield * 100
That means if we find theoretical yield we can find percent yield:
Moles Aluminium: 26.98g/mol
3.11g * (1mol / 26.98g) = 0.115 moles Al
Moles Chlorine: 70.90g/mol
5.32g * (1mol / 70.90g) = 0.075 moles Cl₂
For a complete reaction of 0.075 moles of Cl₂ are required:
0.075 moles Cl₂ * (2mol Al / 3mol Cl₂) = 0.050 moles of Al
As there are 0.115 moles of Al, Aluminium is the excess reactant and Cl₂ the limiting reactant.
Moles AlCl₃ and mass: 133.34g/mol
0.075 moles Cl₂ * (2mol AlCl₃ / 3mol Cl₂) = 0.050 moles of AlCl₃
0.050 moles of AlCl₃ * (133.34g / mol) =
6.67g of AlCl₃ can be producedPercent yield:
5.57g / 6.67g * 100 =
83.5% is percent yieldWhat is indicated by the prop- prefix?
Answer:
The molecule has 3 carbon atoms.
Explanation: