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Zielflug [23.3K]
3 years ago
14

How many moles are in 25.2 grams of HF

Chemistry
1 answer:
seraphim [82]3 years ago
7 0
Molar mass of HF = 20.01 g/mol

1 mole  HF --------------- 20.01 g
mole HF ------------------ 25.2 g

mole HF = 25.2 / 20.01

= 1.259 moles 
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Answer:

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Explanation

Firstly, It is considered as a stichiometry problem.

From the balanced equation: 2LiCl → 2Li + Cl₂

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We must convert the grams of Li metal (30.3 g) to moles (n = mass/atomic mass), atomic mass of Li = 6.941 g/mole.

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Using cross multiplication:

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??? moles of LiCl → 4.365  moles of Li.

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