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

0.32mole

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  =

Molar mass  = 118.7g/mol

  So;

 Insert the parameters and solve;

Number of moles  =   = 0.32mole

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

explanation: