Question

A student weighed 0.550 g of lithium chloride, LiCl, to use in a reaction. How many moles is this? a. 5.11 b. 42.39 c. 23.31 d. 77.08 e. 0.0130

Answer 1

Answer:

The answer is option e

Explanation:

To find the number of moles we must first find the molar mass of LiCL

From the question

mass = 0.550g

M(Li) = 6 Cl = 35.5

Molar mass of LiCL = 6 + 35.5 = 41.5 g/mol

Then we use the formula

$n = \frac{m}{M}$

where

n is the number of miles

m is the mass

M is the molar mass

So we have

$n = \frac{0.550}{41.5}$

We have the final answer as

0.0130 mol

Hope this helps you