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
Leto [7]
3 years ago
13

A sample of gas contains 6.25 × 10-3 mol in a 500.0 mL flask at 265°C. What is the pressure of the gas in kilopascals? Which var

iables are given? pressure volume temperature moles
Chemistry
2 answers:
RideAnS [48]3 years ago
4 0

55.9 kPa; Variables given = volume (V), moles (n), temperature (T)

We must calculate <em>p</em> from <em>V, n</em>, and <em>T</em>, so we use <em>the Ideal Gas Law</em>:

<em>pV = nRT</em>

Solve for <em>p</em>: <em>p = nRT/V</em>

R = 8.314 kPa.L.K^(-1).mol^(-1)

<em>T</em> = (265 + 273.15) K = 538.15 K

<em>V</em> = 500.0 mL = 0.5000 L

∴ <em>p</em> = [6.25 x 10^(-3) mol x 8.314 kPa·L·K^(-1)·mol^(-1) x 538.15 K]/(0.5000 L) = 55.9 kPa

VashaNatasha [74]3 years ago
4 0

Which variables are given?

Answer:

volume

temperature

moles  

Which variables are unknown?

Answer:

pressure

Select the correct algebraic form for the equation to be used for this calculation.

Answer:

p= nRT/V

Solve the problem for the pressure of oxygen.

Answer:

55.9 kPa

You might be interested in
Calculate the mass of 1.00 mol of each of these substances
bogdanovich [222]
What are the substances?
7 0
3 years ago
What makes an acid or base strong?
AlladinOne [14]

Answer:

Conducts electricity

Explanation:

an acid or base which strongly conducts electricity contains a large number of ions and is called a strong acid or base and an acid or base which conducts electricity only weakly contains a few ions and his called a weaker acid base

8 0
3 years ago
Locate on the periodic table each group of ions with the same charge. What relationship exists between ions of the same charge a
DiKsa [7]

Answer:

The periodic table is a tabular display of the chemical elements organized on the basis of their atomic numbers, electron configurations, and chemical properties. ... Elements with the same number of valence electrons are kept together in groups, such as the halogens and the noble gases.

4 0
3 years ago
Ammonia (NH3) reacts with oxygen to form nitric oxide (NO) and water vapor: 4NH3 + 502 4NO + 6H2O b) When 20.0 g NH3 and 50.0 g
Solnce55 [7]

Answer: a) . Ammonia is the limiting reagent

b. Oxygen is left over and 0.1375 g of oxygen is left over.

c. The theoretical yield of NO is 35.29 g.

d. The theoretical yield of H_2O is 31.74 g.

Explanation:

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}  

For NH_3

Given mass of ammonia = 20.0 g

Molar mass of ammonia = 17.031 g/mol

Putting values in equation 1, we get:

\text{Moles of ammonia}=\frac{20.0g}{17.031g/mol}=1.17mol

For O_2

Given mass of oxygen gas = 50.0 g

Molar mass of oxygen gas = 32 g/mol

Putting values in equation 1, we get:

\text{Moles of oxygen gas}=\frac{50.0g}{32g/mol}=1.6mol

The chemical equation for the reaction is

4NH_3+5O_2\rightarrow 4NO+6H_2O

By Stoichiometry of the reaction:

4 moles of ammonia reacts with = 5 moles of oxygen

So 1.17 moles of ammonia will react with = \frac{5}{4}\times 1.17=1.4625mol of oxygen

As, given amount of oxygen is more than the required amount. So, it is considered as an excess reagent and (1.6-1.4625)= 0.1375 g of oxygen is left unreacted.

Thus ammonia is considered as a limiting reagent because it limits the formation of product.

1. By Stoichiometry of the reaction:

4 moles of ammonia produces = 4 moles of NO

1.17 moles of ammonia will produce = \frac{4}{4}\times 1.17=1.17moles of NO

Mass of NO=moles\times {\text{Molar Mass}}=1.17\times 30=35.29g

Thus Theoretical yield of NO is 35.29 grams.

2. By Stoichiometry of the reaction:

4 moles of ammonia produces = 6 moles of H_2O

1.2 moles of ammonia will produce = \frac{6}{4}\times 1.2=1.8moles of H_2O

Mass of H_2O=moles\times {\text{Molar Mass}}=1.8\times 18.015=31.74g  H_2O

Thus Theoretical yield of H_2O is 31.74 grams.

8 0
3 years ago
What is the source of carbon 14 in our environment ?
maksim [4K]

The reaction of atomic N with neutrons in the upper atmosphere

6 0
3 years ago
Other questions:
  • Consider the standard galvanic cell based on the following half-reactions The electrodes in this cell are and . Does the cell po
    15·1 answer
  • if 150g of aluminum react with 101g of sulfuric acid what is the maximum amount of hydrogen gas that can be produced
    6·1 answer
  • HELP ME AND PLZ ANSWERED THIS ALL RIGHT PLZ
    9·1 answer
  • What is the precipitate for CuSO4+NaOH<br> (Balancing Equations)
    5·1 answer
  • Were would you be if all the stars you see are circumpolar
    8·1 answer
  • What does the number of protons<br> determine?
    7·1 answer
  • Please help with 2 chem questions thank you!
    7·2 answers
  • Do you think the benefits of nuclear power outweigh the potential drawbacks
    12·1 answer
  • What are the steps of natural selection?
    8·1 answer
  • The notation for a particular nucleus is r3785b. in an electrically neutral atom. How many electrons are in orbit about this nuc
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!