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BigorU [14]
3 years ago
14

You need 150g of pure lithium for an experiment you're doing. You have 675g of lithium oxide (Li2O). Can you extract all the lit

hium you need from the amount of compound you have? Show your reasoning.
Chemistry
1 answer:
Sladkaya [172]3 years ago
7 0

Answer: Yes we can extract all the lithium from the amount of compound we have.

Explanation:

To calculate the moles :

moles=\frac{\text {given mass}}{\text {Molar mass}}

\text{Moles of} Li=\frac{150g}{7g/mol}=21.4moles

\text{Moles of} Li_2O=\frac{675g}{30g/mol}=22.5moles

2Li_2O\rightarrow 4Li+O_2

According to stoichiometry :

2 moles of Li_2O produce 4 moles of Li

Thus 22.5 moles of Li_2O will produce=\frac{4}{2}\times 22.5=45moles  of Li

As 21.4 moles is a lesser quantity than 45 moles, thus it can be produced

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