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
umka21 [38]
4 years ago
5

Air contains mostly nitrogen (78%) and oxygen (21%). It also contains other gases, including carbon dioxide and helium, and vari

ous pollutants (both gases and solids). Write a brief explanation about why air is a mixture, whether it is homogeneous or heterogeneous, and how it can be separated into its components.
Chemistry
1 answer:
masya89 [10]4 years ago
7 0
Air is heterogenous mixture because it is made of components that can seperate, The process to sperate air into its components is called fractional distillation. In this process, air coverts to a liquid form, and then it seprates into seperate layers, which then helps you to see air's components.

hopefully this helps you.
You might be interested in
A sample of neon occupies a volume of 478 mL at STP. What will be the volume of the neon when the pressure is reduced to 93.3 kP
Andre45 [30]

The volume of neon when the pressure is reduced to 93.3 kPa is 519 mL.

Explanation:

The kinetic theory of gases is mostly based on Boyle's law. From the Boyle's law, the pressure experienced by any gas molecules is inversely proportional to volume of the gas molecules. Also this inverse relation is obeyed if and only if the number of moles and temperature of the gas molecules remained constant.

So,P=\frac{1}{V}

So if there is a change in pressure then there will be inverse change in volume. That means if there is decrease in the pressure of gas molecules then there will be increase in the volume and vice versa.

So the Boyle's law is combined as P_{1} V_{1} = P_{2} V_{2}

As here the initial pressure or P_{1} is 1 atm or 101.3 kPa and the initial volume is 478 mL. Similarly, the final pressure is 93.3 kPa and the final volume will be

101.3*10^{3}*478*10^{-3}  = 93.3*10^{3} * V_{2}

V_{2} = 519 mL

So, the volume of neon when the pressure is reduced to 93.3 kPa is 519 mL.

5 0
4 years ago
with strong heating calcium carbonate undergoes thermal decomposition how many mole of CaCO3 are there in 50g of calcium carbona
aev [14]
Ca=40
C=12
O=16
1 mole of CaCO3 has 100 grams
So 50 grams is 0.5 mole
6 0
2 years ago
Read 2 more answers
172 °C = __________ K<br> (Round off to the nearest whole number)
NNADVOKAT [17]
-101, K=C+273 so in this you would subtract 273 from 172
8 0
3 years ago
When a scientist is beginning the process what is the key term she or he must ask in order to begin?
ella [17]

Answer:

B- why or how because any scientist deals with matter it's relationships ,properties and its composition which can be inferred from the questions why and how

5 0
3 years ago
Given a gas with an initial volume of 3.0 L and a temperature of 290 K, what is the final volume if the
statuscvo [17]

Answer:

2.8l

Explanation:

just make v2 de subject

6 0
3 years ago
Other questions:
  • (20 Points) Which definition of "coarse" matches its use in the phrase "coarse focus?"
    12·2 answers
  • How many electrons are in Fe3+ ?
    14·2 answers
  • A solution of iron(III) chlorate was poured into a lithium phosphate solution. Would you expect a precipitate to form if 354.0 m
    5·1 answer
  • What masses of sodium chloride, magnesium chloride, sodium sulfate, calcium chloride, potassium chloride, and sodium bicarbonate
    10·1 answer
  • Which combination of atmospheric conditions created this weather over the Golden Gate Bridge in San Francisco?
    6·2 answers
  • 4.0 moles of H2O would have what mass?
    11·2 answers
  • A weak acid is one which:
    7·1 answer
  • Can anyone help? The instructions are in bold.
    15·1 answer
  • Can y’all please help with this? :(
    14·1 answer
  • The colourlcas liquid was added to an hydrious iron (II) chloride. (1) State what was observed. e 6 Write jouic equatico for the
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!