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Oxana [17]
3 years ago
11

What must be true for a substance to be able to dissolve in water?

Chemistry
1 answer:
JulsSmile [24]3 years ago
6 0
B. i think not 100% sure 
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0. 820 mole of hydrogen gas has a volume of 2. 00 l at a certain temperature and pressure. What is the volume of 0. 125 mol of t
Mamont248 [21]

The volume of 0.125 mole of the gas at the same temperature and pressure 0.30 L

<h3>Data obtained from the question </h3>
  • Initial mole (n₁) = 0.82 mole
  • Initial volume (V₁) = 2 L
  • New mole (n₂) = 0.125 mole
  • Pressure = Constant
  • Temperature = Constant
  • New Volume (V₂) =?

<h3>How to determine the new volume</h3>

The new volume can be obtained as illustrated below

PV = nRT

Divide both side by P

V = nRT / P

Divide both side by n

V / n = RT / P = Constant

Thus,

V₁ / n₁ = V₂ / n₂

2 / 0.82 = V₂ / 0.125

Cross multiply

0.82 × V₂ = 2 × 0.125

Divide both side by 0.82

V₂ = (2 × 0.125) / 0.82

V₂ = 0.30 L

Learn more about ideal gas equation:

brainly.com/question/4147359

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4 0
2 years ago
In an ionic bond:
inna [77]
Correct answer is 
<span>D. One atom accepts electrons from another.</span>
8 0
3 years ago
Read 2 more answers
Where dose the energy that drives the rock cycle come from
Elan Coil [88]

Answer:

It comes from the sun.

6 0
2 years ago
A photon has a frequency of 2.68 x 10^6 HZ calculate it's energy
Nat2105 [25]

Answer:

1.77*10^-27

Explanation:

E= hf

=6.63*10^-34 * 2.68*10^6

=1.77*10^-27

8 0
3 years ago
The temperature at which carbon dioxide sublimes is about 195 K. What is this
Rom4ik [11]
This temperature in units of degree Celsius is..

-78° Celsius
3 0
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