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coldgirl [10]
3 years ago
8

PLEASE HELP ME!!!! WILL GIVE BRAINLIEST!!!!

Chemistry
1 answer:
vitfil [10]3 years ago
4 0

Answer: 1. 3.23 m

2. 32.4

3. B  adding solvent  and C  removing solute

Explanation:

1. Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent

Molality=\frac{n}{W_s}

where,

n = moles of solute

W_s = weight of solvent

Now put all the given values in the formula of molality, we get

Molality=\frac{43.6mol}{13.5kg}=3.23mol/kg

2. Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n}{V_s}

where,

n = moles of solute

V_s = volume of solution in L

3.4=\frac{n}{9.54}

n=32.4

Therefore, the moles of Na_2CO_3 is 32.4

3. Molarity can be decreased by decreasing the moles of solute and by increasing the volume of solution.

Thus adding solvent  and removing solute will decrease the molarity.

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