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
pshichka [43]
3 years ago
14

Which substance is a gas at room temperature and atmospheric pressure?

Chemistry
1 answer:
natulia [17]3 years ago
8 0
Ar is a substance that is a gas at room temperature and atmospheric pressure.
You might be interested in
How is it possible to have thousands of different proteins when there are only 20 different amino acids?
STatiana [176]
Hi there!

Although there are only 20 amino acids, these amino acids can combine into an innumerable amount of combinations to form different and unique proteins. 

In case that doesn't make sense to you, I'll provide you with an analogy. You could be provided with 20 different LEGO bricks to work with. While there may only be 20 bricks, these bricks can combine into a vast amount of different formations, structures, etc. Amino Acids work in the same way.
3 0
3 years ago
As the pressure on the surface of a liquid decreases, the temperature at which the liquid will boil
ankoles [38]

Answer: option (1) decreases.


Explanation:


May be you have experienced that: when you go to the beach, where the atmposhpere pressure is greater than the atmosphere pressure in places that are at higher altitudes, the water takes longer to boil. That is because the boiling temperature is greater, and you need more total heat (more time) to permit the liquid to reach that temperature.


The reason why that happens is because substances boil when the vapor pressure (the pressure of the particles of vapor over the liquid) equals the atmosphere pressure. So, when the atmposhere pressure increases, the temperature at which the vapor pressure reaches the atmosphere pressure also increases, and when the atmosphere pressure decreases, the temperature at which the vapor pressure reaches the atmosphere pressure decreases.



5 0
3 years ago
Read 2 more answers
Help me please I need to know
rjkz [21]
C- Electron
A-Nucleus 
B-Neutron
D-Protron
7 0
3 years ago
A chemist mixes 1.00 g CuCl2 with an excess of (NH4)2HPO4 in dilute aqueous solution . He measures the evolution of 670 J of hea
kaheart [24]

Answer:

\Delta H will be 90054 J

Explanation:

Number of moles = (mass)/(molar mass)

Molar mass of CuCl_{2} = 134.45 g/mol

So, 1.00 g of CuCl_{2} = \frac{1.00}{134.45}mol of CuCl_{2} = 0.00744 mol of CuCl_{2}

0.00744 mol of CuCl_{2} produces 670 J of heat

So, 1 mol of CuCl_{2} produces \frac{670}{0.00744}J of heat or 90054 J of heat

4 0
4 years ago
A rock that forms from many small fragments of other rocks is a what type of rock
neonofarm [45]
The answer would be Sedimentary
6 0
3 years ago
Other questions:
  • A well-tested explanation for a set of observations or experimental results is a A. law. B. rule. C. theory. D. hypothesis.
    12·1 answer
  • Which of these expressions are correct variations of the Combined Gas Law? P1V1T2 = P2V2T1 both
    10·2 answers
  • Which statement describes acids?
    14·2 answers
  • What size container is needed to hold 7.00 mol of a gas at 342 K and 255 kPa? *
    6·1 answer
  • According to the kinetic molecular theory, which statement describes the particles of an ideal gas? -1)The motion of the gas par
    11·1 answer
  • The moon's craters are remnants of meteorite collisions. suppose a fairly large asteroid that has a mass of 5.00×10^12 kg (about
    5·2 answers
  • Pleaseeeeeeeeeee helpppppppppppppppp
    8·1 answer
  • We can identify unknown elements in a star by matching the ___________ spectrum of the star to those of known elements. *
    7·1 answer
  • Please help. Will give brainliest
    15·1 answer
  • The triple point of water occurs at a pressure of 4.59 mmHg.<br> What is the pressure in atm?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!