Answer:
Explanation:
From the information given:
Step 1:
Determine the partial pressure of each gas at total Volume (V) = 4.0 L
So, using:
[tex]\text{The new partial pressure for }N_2 \ gas}[/tex]
[tex]P_1V_1=P_2V_2[/tex]
[tex]P_2=\dfrac{P_1V_1}{V_2} \\ \\ P_2=\dfrac{2.1 \ bar \times 1\ L}{4.0 \ L} \\ \\ P_2 = 0.525 \ bar[/tex]
[tex]\text{The new partial pressure for }Ar \ gas}[/tex]
[tex]P_2=\dfrac{P_1V_1}{V_2} \\ \\ P_2=\dfrac{3.4 \ bar \times 2 \ L}{4.0 \ L} \\ \\ P_2 = 1.7 \ bar[/tex]
[tex]Total pressure= P [N_2] + P[Ar] \ \\ \\ . \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ = (0.525 + 1.7)Bar \\ \\ . \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ = 2.225 \ Bar[/tex]
Now, to determine the final pressure using different temperature; to also achieve this, we need to determine the initial moles of each gas.
According to Ideal gas Law.
[tex]2.1 \ bar = 2.07 \ atm \\ \\3.4 \ bar = 3.36 \ atm[/tex]
For moles N₂:
[tex]PV = nRT \\ \\ n = \dfrac{PV}{RT}[/tex]
[tex]n = \dfrac{2.07 \ atm \times 1 \ L }{0.08206 \ L .atm. per. mol. K \times 304 \ K}[/tex]
[tex]n = 0.08297 \ mol \ N_2[/tex]
For moles of Ar:
[tex]PV = nRT \\ \\ n = \dfrac{PV}{RT}[/tex]
[tex]n = \dfrac{3.36 \ atm \times 1 \ 2L }{0.08206 \ L .atm. per. mol. K \times 377 \ K}[/tex]
[tex]n = 0.2172 \ mol \ Ar[/tex]
[tex]\mathtt{total \ moles = moles \ of \ N_2 + moles \ of \ Ar}[/tex]
[tex]=0.08297 mol + 0.2037 mol \\ = 0.2867 mol gases[/tex]
Finally;
The final pressure of the mixture is:
[tex]PV = nRT \\ \\ P = \dfrac{nRT}{V} \\ \\ P = \dfrac{0.2867 \ mol \times 0.08206 \ L .atm/mol .K\times 377 K}{4.0 \ L}[/tex]
P = 2.217 atm
P ≅ 2.24 bar
You can calculate distance from work and force with the equation
Answer:
Summary. Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m).
Explanation:
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Distance is the measure of how far or near an object is placed. It can be referred to as the length between the two points. The distance can be calculated by the formula, [tex]\rm Work = Force \times Distance.[/tex]
What are work and force?Work is the amount of force or energy required by the system to move the thing or the object from its original position to another. It is estimated in joules.
Force is the strength or the power required by the object to change its motion. It is calculated in Newtons.
The distance can be measured by using the work and the force applied by the object to move from initial to the final position as,
[tex]\rm Work = Force \times Distance[/tex]
Therefore, distance can be calculated by work and force.
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Nickel carbonyl decomposes to form nickel and carbon monoxide, like this:
Ni(CO)4(g) → Ni(s)+ 4CO(g)
At a certain temperature, a chemist finds that a 2.6 L reaction vessel containing a mixture of nickel carbonyl, nickel, and carbon monoxide at equilibrium has the following composition:
compound amount
Ni(CO)4 0.597g
Ni 12.7g
CO 1.98g
Required:
Calculate the value of the equilibrium constant for this reaction.
Answer:
[tex]K=4.07x10^{-4}[/tex]
Explanation:
Hello!
In this case, according to the given chemical reaction, it is possible to set up the equilibrium expression as shown below:
[tex]K=\frac{[CO]^4}{[Ni(CO)_4]}[/tex]
Since the nickel product is solid and is not included. It means that the concentrations at equilibrium of CO and Ni(CO)₄ are:
[tex][CO]_{EQ}=\frac{1.98g}{28.01g/mol} *\frac{1}{2.6L}=0.0272M[/tex]
[tex][Ni(CO)_4]_{EQ}=\frac{0.597g}{170.73g/mol} *\frac{1}{2.6L}=0.001345M[/tex]
Thus, there equilibrium constant for the reaction turns out to be:
[tex]K=\frac{(0.0272)^4}{[(0.001345)}\\\\K=4.07x10^{-4}[/tex]
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What is the formula for tetracarbon difluorine octabromide?
Answer: The formula for tetracarbon difluorine octabromide is [tex]C_4F_2Br_8[/tex]
Explanation:
The naming of covalent compound is given by:
The less electronegative element is written first.
The more electronegative element is written second. Then a suffix is added with it. The suffix added is '-ide'.
If atoms of an element is greater than 1, then prefixes are added which are 'mono' for 1 atom, 'di' for 2 atoms, 'tri' for 3 atoms and so on.
Hence, the correct formula for tetracarbon difluorine octabromide is [tex]C_4F_2Br_8[/tex]
Strawberries contain about 15 wt% solids and 85 wt% water. To make strawberry jam, crushed strawberries and sugar are mixed in a 45:55 mass ratio, and the mixture is heated to evaporate water until the residue contains one-third water by mass.
a) Draw and label a flowchart of this process.
b) Do the degree-of-freedom analysis and show that the system has zero degrees of freedom (i.e., the number of unknown process variables equals the number of equations relating them). If you have too many unknowns, think about what you might have forgotten to do.
c) Calculate how many pounds of strawberries are needed to make a pound of jam.
d) Making a pound of jam is something you could accomplish in your own kitchen (or maybe even a dorm room). However, a typical manufacturing line for jam might produce 1500 \mathrm{lb}_{\mathrm{m}} / \mathrm{h}. List technical and economic factors you would have to take into account as you scaled up this process from your kitchen to a commercial operation.
Answer:
A. The flow diagram is in the attachment
B. Degree of freedom = 0
C. 0.486
D. Energy, power, cost of production
Explanation:
1/3 of water = 0.3333
Sugar = 1-1/3 = 2/3
B.) 45/55 = 9/11 when divided by 5
m1/m2 = 9/11
Cross multiply and make m1 subject of the formula
m1/m2 = 0.818
m1 = 0.818m2 ----1
0.15m1 + m2 = 1 x 0.667
0.15m1 + m2 = 0.667
0.15(0.818m2) = 0.667
1.1227m2 = 0.667
M2 = 0.5941
We put value of m2 in equation 1
M1 = 0.818 x 0.5941
M1 = 0.486
So 0.486 pound of strawberry is what we need in order to make 1 pound of jam.
D. We need great heat for water evaporation
The technical and economic factors would be
1. Energy which is power consumption
2. Cost of production for equipments and materials
3. Power
4. And hazards
A self-aldol or crossed aldol reaction REQUIRES a(n) ___________________. Group of answer choices strong acid only a very, very strong base, such as LDA (lithium diisopropyl amide), NaOH or LiOH won't work acid catalyst a strong base such as LiOH or NaOH
Answer:
[tex]\mathbf{a \ strong \ base \ such \ as\ LiOH \ or \ NaOH.}[/tex]
Explanation:
In the condensation reactions of carbonyl compounds, it is essential to establish the order of events in advance to minimize or suppress the possibilities of self-condensation and the occurrence of cross-condensation, which unfortunately are an obvious threat in these reactions.
Self-condensation:
Any carbonyl compound that has one or more alpha hydrogens, on the carbons adjacent to the carbonyl group, runs the risk of undergoing a self-condensation reaction if the corresponding rigor is not carried out.
Cross-condensation:
Ideally, in the condensation reactions of carbonyl compounds, one of the reacting molecules should quickly enolise, while the other preferably should not have Hα, to ensure that no other by-products are formed.
[tex]\text{To achieve this process;}[/tex] [tex]\text{A self-aldol or crossed aldol requires a strong base such as LiOH or NaOH.}[/tex]
how scientists used the scientific method to learn more about how dinosaurs became extinct
Answer:
they tested the bone age
Explanation:
What period of history worsened air and water pollution in the 1800s?
A. The Roaring Twenties
B. The Industrial Revolution
C. The Reformation
D. The Gilded Age
Answer:
The Industrial Revolution
salt in soap make the soap stronger
Answer:
yes correct salt hardens soap
1. Why do magnets repel each other?
2. Why do magnets attract some metal objects?
3. What happens if a magnet breaks in ½?
4. How do you make a piece of metal magnetic?
Please please help
what is the pattern of valence numbers on the periodic table?
Answer:
In general, the number of valence electrons is the same within a column and increases from left to right within a row. Group 1 elements have just one valence electron and group 18 elements have eight, except for helium, which has only two electrons total.
A 20.0 L container at 303 K holds a mixture of two gases with a total pressure of 5.00 atm. If there are 2.00 mol of Gas A in the mixture, how many moles of Gas B are present?
What is the correct answer? Please
Answer:
Latitude
ocean currents
Wind
Elevation
Water
A(n) ____________ is a push or a pull.
newton
acceleration
force
momentum
1. Fill in the best answer for each of the following: a) ________________________ is the capacity to do work or to supply heat. b) ________________________ is energy stored within a substance due to its chemical composition. c) A reaction that absorbs energy is called a(n) ________________________ reaction. d) The __________________________________ says that in any chemical or physical change, energy can neither be created nor destroyed, only changed in form. e) Thermochemistry is the study of ________________________ that occur during chemical and physical changes.
Answer:
A. Energy
B. Chemical potential
C. Endothermic reaction
D.The law of conservation of mass
E. Transfers of energy
The fill in the blanks for energy, reaction, and the law of mass is
A. Energy
B. Chemical potential
C. Endothermic reaction
D. The law of conservation of mass.
E. Transfers of energy
What is the law of conservation of mass?The law says that energy can neither be created nor destroyed.
The law was given by Antoine Lavoisier.
Thus, fill in the blanks are: A. Energy
B. Chemical potential
C. Endothermic reaction
D. The law of conservation of mass.
E. Transfers of energy
Learn more about energy
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Give me some examples of why is it important to understand how ocean currents flow.
Answer:
By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate. Ocean currents are also critically important to sea life. They carry nutrients and food to organisms that live permanently attached in one place, and carry reproductive cells and ocean life to new places.
Explanation:
:)
300.0 mL of a gas is at a pressure of 5.00 atm. What is the volume of the gas at 2.00 atm?
A. 500 ml
B. 100 mL
C. 750 mL
D. 250 mL
Calculate the mass, in grams, of 0.433 mol of CO2
Ammonium chloride is produced in the thermochemical equation NH3 (g) + HCl (g) → NH4Cl (s) ΔH = –176 kJ.
How many moles of NH4Cl have been produced if the change in enthalpy is –528 kJ?
Answer:
3 moles of NH₄Cl
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
NH₃(g) + HCl(g) → NH₄Cl(s) ΔH = –176 kJ
From the balanced equation above,
1 mole of NH₄Cl where obtained when the change in enthalphy (ΔH) was –176 kJ.
Finally, we shall determine the number of mole of NH₄Cl produced when the change in enthalphy (ΔH) is –528 kJ. This can be obtained as follow:
From the balanced equation above,
1 mole of NH₄Cl where obtained when the change in enthalphy (ΔH) was –176 kJ.
Therefore, Xmol of NH₄Cl will be obtained when the change in enthalphy (ΔH) is –528 kJ i.e
Xmol of NH₄Cl = –528 / –176
Xmol of NH₄Cl = 3 moles
Thus, 3 moles of NH₄Cl where obtained from the reaction.
in the ideal gas law which variable represents the gas constant?
a: T
b: R
c: n
d: V
e: P
Explanation:
It is represented using the ideal gas equation , or PV = nRT, where P is the pressure in atmospheres, V is the volume in liters, n represents the quantity of particles in the container, T represents the temperature in Kelvin, and R is the ideal gas constant equal to 0.0821 liters atmospheres per moles Kelvin.
According to the Arrhenius concept, an acid is a substance that ________. According to the Arrhenius concept, an acid is a substance that ________. tastes bitter can accept a pair of electrons to form a coordinate covalent bond is capable of donating one or more H reacts with the solvent to form the cation formed by autoionization of that solvent causes an increase in the concentration of H in aqueous solutions
Answer: According to the Arrhenius concept, an acid is a substance that causes an increase in the concentration of H in aqueous solutions
Explanation:
According to the Arrhenius concept, an acid is a substance that ionizes in the water to give hydronium ion or hydrogen ion and a bases is a substance that ionizes in the water to give hydroxide ion .
[tex]HA(aq)\rightarrow H^+(aq)+A^-(aq)[/tex]
[tex]BOH(aq)\rightarrow B^+(aq)+OH^-(aq)[/tex]
According to lewis concept , an acid is a substance that accepts electrons and a base is a substance that can donate electrons.
K2S(s) + MgI2 (aq) -----> ?
Answer:
MgS + KI = K2S + MgI2
FIRST CORRECT ANSWER GETS 10 POINTS!!!!
Which explains how the nervous system is typically involved in keeping the body in homeostasis?
It processes the environment and sends out signals.
It controls movement and provides structure.
It physically breaks down and absorbs food.
It puts oxygen in the blood, which is essential for life.
Answer:
Explanation:
It processes the environment and sends out signals.
what are causes of students to drop-out from university
Answer:
stress
Explanation:
people cn get stressed and not want to do work
When a solution of cesium chloride (CsCl) is subjected to high-speed centrifugation, a stable density gradient is formed. Meselson and Stahl found that when cell contents were subjected to centrifugation with a CsCl solution, a band of DNA formed at the CsCl density that matched the density of the DNA. This technique is called density-gradient centrifugation.
a. True
b. False
Answer:
True
Explanation:
Messelson and strahl explain the semiconservative existence of DNA replication by using CsCl gradient centrifugation. The hardest would go and rest at the base of the test tube, while the lightest would be at the top, the lightest would find a position between the heavy and the lightest. When the heavy tube is centralized, from a pool of light, bulky and moderate DNA.
This technique is called density-gradient centrifugation. Hence, the given statement is true.
Please help!!!!!!!!!!!!
Answer:
Explanation:
Atomic number = 8
Electron = 8
1s level= 2
2nd level = 6
3rd level =0
Hope this help
[tex]\huge\underline\mathbb\pink{ANSWER\::}\\\\[/tex]
Atomic Number : 8
Total number of electron : 8
1st level Electrons : 2
2nd level Electrons : 6
3rd level Electrons : 0
[tex]\\\\\\[/tex]
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What does the subscript tell you?
A. the number of elements in a formula
B. the number of atoms of each element in a formula
C. the number you multiply the compound by
D. none of these
Simplifying the expression 3y-4y+3y gives:
Answer:
the answer is 2y!
Explanation:
3y+3y =6y -4y = 2y
PLEASE HELPPPPPPPPPPPPPP
Calculate the precise Molar Mass of NH3 and calculate the moles in 50.0
grams.
Answer: Molar mass of [tex]NH_3[/tex] is 17.00 g and moles in 50.0 grams is 2.94.
Explanation:
Molar mass is defined as the mass in grams of 1 mole of a substance.
S.I Unit of Molar mass is gram per mole and it is represented as g/mol.
Atomic Mass of Nitrogen (N) = 14.00 g
Atomic Mass of Hydrogen (H) = 1.00 g
Molar mass of [tex]NH_3[/tex] = 1(14.00)+3(1.00) g = 17.00 g
According to avogadro's law, 1 mole of every substance contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles and weigh equal to its molecular mass.
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]
[tex]\text{Number of moles of }NH_3==\frac{50.0g}{17.00g/mol}=2.94moles[/tex]
Identify the fact that is FALSE about the law of conservation of energy?
Answer:
What are the options?
Explanation:
......