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Vinvika [58]
2 years ago
12

The molar mass of kcl is 74.55 g/mol. if 8.45 g kcl are dissolved in 0.750 l of solution, what is the molarity of the solution?

use molarity equals startfraction moles of solute over liters of solution endfraction.. 0.113 m 0.151 m 6.62 m 11.3 m
Chemistry
1 answer:
Maslowich2 years ago
7 0

Answer: 0.151 M

Explanation:

We first need to convert the amount of KCl into moles. This is 8.45/74.55 = 0.113 moles.

So, the molarity is 0.113/0.750 = 0.151 M

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2 years ago
The solution you identified in question (1) acts as a buffer due to reactions that occur within the solution when an acid or a b
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Answer:

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8 0
3 years ago
HELP PLSSSSS!!
11Alexandr11 [23.1K]

Answer:

68133080.02 g

Explanation:

I believe that the question is to find the mass of air in the room and not the molar mass of air since the molar mass of air was already given in the question as 28.97 g/mol.

Now, if 1 mole of a gas occupies 22.4 L

x moles of air occupies 52,681,428.8 Liters

x = 1 * 52,681,428.8 /22.4

x = 2351849.5 moles of air

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2351849.5 = mass/28.97

mass = 2351849.5 * 28.97

mass = 68133080.02 g

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3 years ago
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