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Zinaida [17]
3 years ago
9

As the energy of the molecules increases, the motion of the molecules _______.

Chemistry
1 answer:
Alexus [3.1K]3 years ago
6 0

Answer:

the motion of molecules increases

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Determine the number of molecules present in a 4.56 mol sample of methane gas (CH4); then determine the number of hydrogen atoms
AnnyKZ [126]

Avogadro’s number is 6.02 x 10^ 23 atoms (or molecules) per mole. Through units cancellation:

Number of atoms = (4.56 mol)( 6.02 x 10^23 molecules/ mol) = 2.74 x 10^ 24 molecules

Since the C:H ratio is 1:4, 1 molecule of CH4 will have 4 atoms of hydrogen,

Therefore  number of H = 4 (2.74 x 10^24 molecules) = 1.098 x 10^ 25 atoms 

6 0
3 years ago
How easily one thing dissolves into another defines what term?
bogdanovich [222]
That is b, solubility 
8 0
3 years ago
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A weather balloon has a volume of 1750 L at 103 kPa. The balloon is then released to the atmosphere. What is the pressure if at
AnnyKZ [126]

Answer:

35.0 kPa

Explanation:

As pressure decreases, the volume of a gas increases at a given temperature., so since the balloon got bigger, the new pressure must be less than 103kPa

Assuming the temperature does not change, use Boyles Law

P1V1 = P2V2

(103kPa) (1750L) = P2 (5150L)

P2 = (103)(1750) / 5150

8 0
3 years ago
The volume of a gas at 17.5 psi decreases from 1.8L to 750mL. What is the new pressure of the gas in arm?
Maurinko [17]

Answer:

P₂ = 2.88 atm

Explanation:

Given data:

Initial volume of gas = 1.8 L

Final volume = 750 mL

Initial pressure = 17.5 Psi

Final pressure = ?

Solution:

We will convert the units first:

Initial pressure = 17.5  /14.696 = 1.2 atm

Final volume = 750 mL ×1L/1000L = 0.75 L

The given problem will be solved through the Boly's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

1.2 atm × 1.8 L =  P₂  ×0.75 L

P₂ = 2.16 atm. L/ 0.75 L

P₂ = 2.88 atm

4 0
3 years ago
All the atoms in Neon do not have to have 10 protons. True, or false?
Levart [38]

Answer:

true

Explanation:

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3 years ago
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