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
SVEN [57.7K]
4 years ago
12

How do we know that air we breathe is matter?

Chemistry
2 answers:
Viefleur [7K]4 years ago
6 0
Because all matter has density and since air has density then air is matter and plus EVERYTHING is made of matter
daser333 [38]4 years ago
5 0

Nerves inside us. They send signals to our brains.

You might be interested in
Can someone figure this out for me thank you
Bas_tet [7]
1. 1
2. 2
3. 2
4. 1
i am pretty sure
4 0
3 years ago
When the isotonic saline solution described in part A is connected to an unknown solution via a semipermeable membrane, the unkn
ozzi

B. The unknown solution had the lower concentration.

Explanation:

Osmosis is a phenomenon in which the molecules of the solvent has a tendency to move through a membrane which is semipermeable from lower concentrated side to the higher concentration side, so that the concentrations on both sides of the membrane must be equal.

So the unknown solution may have lesser concentration than the isotonic solution so that molecules of that solution move from less concentrated side to the more concentrated side, so its level drops.

3 0
3 years ago
Seven moles of Argon gas are at a presseure of 2.90 atm, and the temperature is 50c . What is the volume of the gas?
ra1l [238]
At s.t.p, the volume of a gas =22.4dm³
Talking the problem,
At 1atm, 273K the volume =7 moles *22.4dm³/mol
At 323K, 2.90atm, volume =?
The combined gas equation
P1v1/T1=P2v2/T2
P1=1atm
P2=2.9atm
T1=273K
T2=323K
V1=156.8dm³
Therefore,
1*156.8dm³/273=2.9atm*V2/323
V2=(156.8dm³*323K)/(273K*2.9atm)
= 64dm³
3 0
4 years ago
I need help on number 3. Thanks
Anika [276]
When it begins to have a chemical affect
4 0
3 years ago
Read 2 more answers
What type of Weathering is important to sand storms on Mars? Physical or
KIM [24]

Answer:

1. Physical Weathering

2. Option B

Explanation:

1. Physical weathering

On Mars, there are two types of weathering agents a) wind and b) acid fog. Thus, they will carry out only physical weathering

2. Option B

3D can be used to produce things that are required on the Mars and also the locally available raw material can be used for printing thereby saving the cost.

3 0
3 years ago
Other questions:
  • The principal reason for the extremely low solubility of nacl in benzene (c6h6) is the __________.
    5·1 answer
  • Suppose total world energy consumption of fossil fuels, equal to 3×1017 kJ/yr, were to be obtained entirely by combustion of pet
    15·1 answer
  • Is Acid Rain Chemical or Physical change and please explain your answer!
    12·1 answer
  • An element has an atomic number of 83. The number of protons and electrons in a neutral atom of the element are ____.
    8·1 answer
  • Do you think food could actually be used as fuel to make water warmer? why or why not?
    8·1 answer
  • While heating up a 25 gram sample of concrete (specific heat = 0.210-cal/g°C), your initial tempărature is room temperature (25°
    12·1 answer
  • Which one will not be a career and life science botanist, zoologist, geneticist and mechanic​
    10·1 answer
  • Newton's Law of Gravity says that any the effect of gravity between two objects depends on what two factors?
    11·1 answer
  • PLEASE HELP I'LL GIVE YOU BRAINLIEST!!
    13·1 answer
  • If one adds 0.1 mol of the weak acid hf (pk_a = 3.2) to a solution with a ph = 2, which species would be most abundant and how m
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!