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
pentagon [3]
3 years ago
9

Chemistry: An oxygen gas container has a volume of 20.0 L. How many grams of oxygen are in the container, if the gas has a press

ure of the 845mmHg at 22degrees Celsius? ​
Chemistry
1 answer:
Morgarella [4.7K]3 years ago
8 0

Answer:

There are 29.4 grams of oxygen in the container

Explanation:

<u>Step 1: </u>Data given

Volume = 20.0 L

Pressure = 845 mmHg

Temperature = 22.0 °C

Molar mass of O2 = 32 g/mol

<u>Step 2:</u> Ideal gas law

p*V = n*R*T

⇒ p = the pressure of the gas = 845 mmHg = 1.11184

⇒ V = the volume of the gas = 20.0 L

⇒ n = the number of moles = TO BE DETERMINED

⇒R = the gasconstant = 0.08206 L*atm/K*mol

⇒ T = the temperature = 22°C + 273 = 295 Kelvin

n = (p*V)/(R*T)

n = (1.11184*20.0)/(0.08206*295)

n = 0.9186 moles

<u>Step 3:</u> Calculate mass of NO2

Mass of O2 = Moles O2 * Molar mass O2

Mass of O2 = 0.9186 moles * 32 g/mol

Mass of O2 = 29.4 grams

There are 29.4 grams of oxygen in the container

You might be interested in
Name the following compounds CaSe <br><br> don’t use common names such as water or salt
Contact [7]
Do it urself ;) jdhdhdhdhdhhdhdhdhdhdhdhdhdhgdhd
8 0
3 years ago
What type of bond does sodium and bromine form?
vitfil [10]
Sodium is a metal and bromine is a nonmetal so they form an ionic compound
nonmetals and nonmetals form covalent compounds
7 0
2 years ago
A solution of an unknown nonvolatile nonelectrolyte was prepared by dissolving 0.250 g of the substance in 40.0 g of ccl4. the b
Finger [1]
Answer : The molar mass of the solute will be 87.90 g/mol.

Explanation : We know the formula for elevation in boiling point, which is

Δt = iK_{b}m

given that, Δt = 0.357, K_{b} = 5.02 and mass of CCl _{4} = 40,

on substituting the value we get,
0.357 = (1) X (5.02) X (x/ 0.044), on solving we get x = 2.844 X10^{-3}. 
Now, 0.250/ 2.844 X10^{-3} = 87.90 g/mol. which is the weight of unknown component.
3 0
3 years ago
Look at sample problem 19.10 in the 8th ed Silberberg book. Write the Ksp expression. Find the concentrations of the ions you ne
777dan777 [17]

Answer:

Explanation:

From the information given:

CaF_2 \to Ca^{2+} + 2F^-

Ksp = 3.2 \times 10^{-11}

no of moles of Ca^{2+} = 0.01 L × 0.0010 mol/L

no of moles of Ca^{2+} = 1 \times 10^{-5} \ mol

no of moles of F^- = 0.01 L × 0.00010 mol/L

no of moles of F^- = 1 \times 10^{-6}\ mol

Total volume = 0.02 L

[Ca^{2+}}] = \dfrac{1\times10^{-5} \ mol}{0.02 \ L} \\ \\  \\  \[[Ca^{2+}}] = 0.0005 \ mol/L

[F^{-}] = \dfrac{(1\times 10^{-6} \ mol)}{0.02 \ L}

[F^{-}] = 5 \times 10^{-5}  \ mol/L

Q = [Ca^{2+}][F^-]^2 \\ \\ Q = 0.0005 \times (5\times 10^{-5})^2 \\ \\ Q = 1.25 \times 10^{-12}

Since Q<ksp, then there will no be any precipitation of CaF2

3 0
3 years ago
The moon cannot be seen during which phase?
ycow [4]
New moon is the phase in which it cannot be seen
8 0
3 years ago
Read 2 more answers
Other questions:
  • All of the following statements correctly describe a contemporary approach to create the Work Breakdown Structure (WBS) for a pr
    13·1 answer
  • Describe the process of inhalation and exhalation with regard to the contraction of the diaphragm – which is an active process a
    15·1 answer
  • What is the concentration of an hbr solution if 12.0 ml of the solution is neutralized by 15.0 ml of a 0.25 m koh solution?
    14·1 answer
  • When hydrogen chloride ionizes in water, which reactant is the proton donor? chlorine which reactant is the proton acceptor? hyd
    5·1 answer
  • Why did bohrs observations of gaseous elements not reveal a complete spectrum when the light was shone through a prism? explain
    5·1 answer
  • A 55.0 L sample of gas at 235 K exerts a pressure of 225 KPa. If its volume is decreased to 42.0 L and the temperature rises to
    6·1 answer
  • Which best describes a compound?
    13·2 answers
  • FIRST TO ANSWER GET BRAINLIEST <br><br> What is the mass in grams of 3.04 mol of ammonia vapor, NH3?
    11·1 answer
  • L 1.4.2 Quiz: Scientific Practices
    8·1 answer
  • Explain the three laws of chemical reaction in detain gilling examples​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!