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Serhud [2]
3 years ago
8

4) Calculate the molarity of a solution prepared by dissolving 32.9 g of NaOH in enough water to

Chemistry
1 answer:
Dmitriy789 [7]3 years ago
7 0

Answer:

1.175 M

Explanation:

Mass =  32.9 g

Volume = 700.0 mL = 0.7 L

Molarity = ?

The relationship between the quantities is given by;

Molarity = Number of moles / Volume

Number pf moles = Mass /Molar mass

Number of moles = 32.9 / 40 = 0.8225 mol

Molarity = 0.8225 / 0.7 = 1.175 M

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Savatey [412]
Answer is: 116,1 g of Li₃N.
Chemical reaction: Li₃N + 3H₂O → 3LiOH + NH₃.
m(LiOH) = 240g.
n(LiOH) = m(LiOH) ÷ M(LiOH).
n(LiOH) = 240 g ÷ 24 g/mol = 10 mol.
from chemical reaction: n(LiOH) : n(Li₃N) = 3 : 1.
10 mol : n(Li₃N) = 3 : 1.
n(Li₃N) = 3,33 mol.
m(Li₃N) = n(Li₃N) · M(Li₃N)
m(Li₃N) = 3,33 mol · 34,85 g/mol = 116,1 g.
8 0
3 years ago
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What are the two components of a solution? Write two properties of a solution
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