1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Artyom0805 [142]
3 years ago
5

When a container is filled with 3 moles of helium gas, 2 moles of oxygen gas, and 1 mole of carbon dioxide gas, the pressure in

the container is 786 kPa. What is the partial pressure of the oxygen gas?
A. 131 kPa
B. 262 kPa
C. 393 kPa
D. 786 kPa
Chemistry
2 answers:
zhenek [66]3 years ago
8 0
<span>The mole fraction of oxygen gas is 2/6 =1/3, because there are 6 total moles of gas in the container. The partial pressure can be found by multiplying this mole fraction by the total pressure. So the answer is B. 262 kPA because 1/3(786)=262.</span>
Karolina [17]3 years ago
5 0

Answer:

B. 262 kPa

Explanation:

First we must find the total of moles in the container:

3 moles of helium + 2 moles of oxygen + 1 mole s of carbon = 6 moles.

of the total of moles, 2 are oxygen, so the fraction of oxygen in the container is 2/6 = 1/3

Thus, the partial pressure of the oxygen gas must be a third of the total pressure in the container:

Partial pressure of the oxygen gas = \frac{786kPa}{3} = 262 kPa\\

The answer is B. 262 kPa

You might be interested in
What does the atomic number of an element tell you about the element?
Liula [17]
How many protons are in am element
5 0
3 years ago
2 1.2.4 Quiz: Units and Measurement
lesya [120]
For physics the answer is 47500
7 0
3 years ago
What is the importance of standardization in chemistry​
Anika [276]

Answer:

Standardisation is used to determine the concentration of a volumetric solution in order to achieve accurate and reliable titration results

5 0
3 years ago
The ksp of copper(ii) carbonate, cuco3, is 1.4 × 10-10. calculate the molar solubility of this compound.
mafiozo [28]
As,
                              CuCO₃    ⇆  Cu²⁺  +  CO₃²⁻
So,
                             Kc  =  [Cu²⁺] [CO₃²⁻] / CuCO₃
Or,
                             Kc (CuCO₃)  =  [Cu²⁺] [CO₃²⁻]
Or,
                             Ksp  =  [Cu²⁺] [CO₃²⁻]
As,
Ksp  = 1.4 × 10⁻¹⁰
So,
                            1.4 × 10⁻¹⁰  =  [x] [x]
Or,
                             x²  =  1.4 × 10⁻¹⁰ 
Or,
                             x  =  1.18 × 10⁻⁵ mol/L
To cahnge ito g/L,
                             x  =  1.18 × 10⁻⁵ mol/L × 123.526 g/mol

                   
         x  =  1.45 × 10⁻³ g/L
3 0
3 years ago
What is the equilibrium constant of a reaction?
xeze [42]

Answer:

A. It is the ratio of the concentrations of products to the concentrations of reactants.

Explanation:

The equilibrium constant of a chemical reaction is the ratio of the concentration of products to the concentration of reactants.

This equilibrium constant can be expressed in many different formats.

  • For any system, the molar concentration of all the species on the right side are related to the molar concentrations of those on the left side by the equilibrium constant.
  • The equilibrium constant is a constant at a given temperature and it is temperature dependent.
  • The derivation of the equilibrium constant is based on the law of mass action.
  • It states that "the rate of a chemical reaction is proportional to the product of the concentration of the reacting substances. "
8 0
3 years ago
Other questions:
  • Why is a hydraulic system useful?
    10·1 answer
  • Determine the number of ch2cl2 molecules in 25.0 g ch2cl2.determine the number of ch2cl2 molecules in 25.0 g ch2cl2.
    9·2 answers
  • Do substrates bind the active site permanelty or temporally
    5·1 answer
  • Identify each of the following as element, compound, homogenious mixture or heterogenios mixture.
    9·1 answer
  • Please help me with this question. image attached
    12·1 answer
  • How can the hemlock woolly upset natural ecosystem?
    15·1 answer
  • Cuantos gramos de nitrato de potasio (KNO3) son necesarias para preparar 800ml de solucion al 12 % m/v
    11·1 answer
  • Plzz help
    10·1 answer
  • Explain why “advancing water contact angles are more sensitive to the hydrophobic property of a surface whereas receding water c
    7·1 answer
  • point)A chemist has 4.43 g of lithium carbonate and must make a 0.0600 mol/L solution.What volume of solution can be made?a) 0.0
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!