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
Gnom [1K]
3 years ago
6

What volume of oxygen gas at 20°C and 0.919 atm is

Chemistry
1 answer:
ehidna [41]3 years ago
5 0

Answer:

Volume of oxygen gas is 78.47L

Explanation:

Data;

Temperature (T) = 20°C = (20 + 273.15)K = 293.15K

Pressure (P) = 0.919atm

Mass (m) = 5g

Volume (v) = ?

Equation of reaction;

4Fe + 3O₂ → 2Fe₂O₃

From the equation of reaction, the number of moles of oxygen is 3.

To find the volume of oxygen produced, we'll have to use ideal gas equation

PV = nRT

P = pressure

V = volume

n = number of moles

R = ideal gas constant = 0.082J/mol.K

T = temperature of the ideal gas

PV = nRT

V = nRT/ P

V = (3 × 0.082 × 293.15) / 0.919

V = 72.1149 / 0.919

V = 78.47L

Volume of the gas is 78.47L

You might be interested in
Essential life materials, like nitrogen and carbon, are exchanged and recycled through _____.
SpyIntel [72]

The answer is A, biogeochemical cycles.

5 0
3 years ago
Read 2 more answers
Which of the following best describes how soil is formed?
harkovskaia [24]

Answer:

Soil minerals form the basis of soil.

Explanation:

They are produced from rocks (parent material) through the processes of weathering and natural erosion. Water, wind, temperature change, gravity, chemical interaction, living organisms and pressure differences all help break down parent material.

5 0
3 years ago
What is the percentage error of length measurement of 0.229cm if the correct value is 0.225cm
Mars2501 [29]

Percent error is the difference between the measured and known value, divided by the known value, multiplied by 100%.

So first, we take our measured value, .299 cm, minus our known value, .225 cm.

.299 cm - .225 cm=.004 cm

Next, we divide that by our known value

\frac{.004}{.225}=.0177777778

Finally, multiply your answer by 100

.0177777778 x 100= 1.77777778 %

Round to three significant figures, and you're done.

=1.78 % error



5 0
4 years ago
Read 2 more answers
Based on what you know about matter explain why the food coloring mixes at different rates
emmasim [6.3K]

Answer:

Matter has different densities. Different food colorings have different densities. Those with a higher density will sink to the bottom and mix much easier than one with a lower density. The higher density also contains more particles making it easier to mix or give it a fuller color.

3 0
2 years ago
I’ll give the Brainliest
Bond [772]

Answer:

D. is the Answer. ✅

Explanation:

The Moon is 1/4 the size of Earth.

A is not right because Moon isn't a dwarf planet.❌

B is not right because the Moon isn't 1/2 the size of Earth.❌

C is not right because the Moon is no where near as large as Earth.❌

5 0
3 years ago
Read 2 more answers
Other questions:
  • What are the ionic bonds
    6·1 answer
  • What is the percentage of magnesium sulfate in MgSO4 x 7H2O.
    7·1 answer
  • Help me ASAP!!!!!!!!!!!!!!!!!!!!
    7·1 answer
  • What is the mass, volume, density, and substance for block D:
    10·1 answer
  • Trends in atomic radius of Period 3 elements
    9·1 answer
  • Does this seem like a good hypothesis?
    6·1 answer
  • Why is it called the periodic table of elements (why is the word periodic in it)
    15·1 answer
  • 2. Have someone hold the mirror for you, slowly move at least 3 m away from the it.
    8·1 answer
  • What is the molarity of a solution made by adding :1.565 moles of PbN03 to 500 mL
    7·1 answer
  • During photosynthesis, the following reaction takes place: carbon dioxide + water + light energy → sugar + oxygen During cellula
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!