Question

How many moles of tin atoms are in a pure tin cup with a
mass of 38.1 g?

Answer 1

0.32mole

Step-by-step explanation:

Given parameters:

Mass of tin cup = 38.1g

Unknown:

Number of moles in the cup = ?

Solution:

To find the number of moles, use the expression below;

Number of moles =
`(mass)/(molar mass)`

Molar mass = 118.7g/mol

So;

Insert the parameters and solve;

Number of moles =
`(38.1)/(118.7)` = 0.32mole