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kolbaska11 [484]
3 years ago
14

Hey! Please help. Will mark brainlist if u are right, ty

Chemistry
1 answer:
Tema [17]3 years ago
8 0

Answer:

40 hopefully right

Explanation:

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You know that 8.9 moles of solute particles are dissolved in that liquid solution. If the molarity of the solution is 25 M, how
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V = 0.356 L

Explanation:

In this case, we need to use the following expression:

M = n/V (1)

Where:

M: molarity of solution (mol/L or M)

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A gas of 3.4 moles occupies a volume of 0.046 L at 298 K. What is the pressure in kPa?
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Explanation :

To calculate the pressure of gas we are using ideal gas equation as:

PV=nRT

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n = number of moles of gas = 3.4

R = gas constant = 8.314 L.kPa/mol.K

T = temperature of gas = 298 K

Now put all the given values in the above formula, we get:

P\times (0.046L)=(3.4mol)\times (8.314L.kPa/mol.K)\times (298K)

P=1.83\times 10^5kPa\approx 2.1\times 10^5kPa

Therefore, the pressure of gas is, 2.1\times 10^5kPa

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