Question

What is the mass of 12.82 moles of lithium (li) atoms? 0.5414 g 1.847 g 88.98 g 535.7 g

Answer 1

To work this out we need to use the equation Mass=n (moles) x Mr.

The Mr of Lithium is 6.941.

Therefore we need to do
Mass=12.82x6.941

Making the answer 88.98g

Answer 2

The mass of 12.82 moles of lithium (Li) atoms is 88.98 g.

Step-by-step explanation:

Moles of lithium = 12.82 mol

Atomic mass of lithium = 6.941 g/mol

Mass of 12.82 moles of lithium =

`12.82 mol* 6.941 g/mol=88.98 g`

The mass of 12.82 moles of lithium (li) atoms is 88.98 g.