Answer :
Answer:
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 = [tex]\frac{mass}{molar mass}[/tex]
Molar mass = 118.7g/mol
So;
Insert the parameters and solve;
Number of moles = [tex]\frac{38.1}{118.7}[/tex] = 0.32mole
Final answer:
The question asks about the number of moles of tin atoms in a tin cup with a given mass. The answer explains how to calculate the moles of tin atoms using the average atomic mass of tin.
Explanation:
The mass of one tin atom is the average atomic mass of tin found on the Periodic Table. The average atomic mass of tin is calculated as 118.7 g/mol. To find the number of moles of atoms in a 38.1 g tin cup, you'd divide the mass of the cup by the average atomic mass of tin:
118.7 g/mol ÷ 38.1 g = 0.32 moles of tin atoms
Hence, there are 0.32 moles of tin atoms in a 38.1 g tin cup.
