Answer:
Step-by-step explanation:
a = 40.1 g of Ca
Number of moles = mass / molar mass
Number of moles = 40.1 g/ 40.1 g/mol
Number of moles = 1 mol
b = 11.5 g Na
Number of moles = mass / molar mass
Number of moles = 11.5 g/ 23 g/mol
Number of moles = 0.5 mol
c = 5.87 g Ni
Number of moles = mass / molar mass
Number of moles = 5.87 g/ 58.7 g/mol
Number of moles = 0.1 mol
d = 150 g of S
Number of moles = mass / molar mass
Number of moles = 150 g/ 32 g/mol
Number of moles = 4.7 mol
e = 2.65 g Fe
Number of moles = mass / molar mass
Number of moles = 2.65 g/ 55.85 g/mol
Number of moles = 0.05 mol
f = 0.00750 g Ag
Number of moles = mass / molar mass
Number of moles = 0.00750 g/ 107.9 g/mol
Number of moles = 6.95 × 10⁻⁵ mol
g = 2.25 × 10²⁵ atoms Zn
1 mole = 6.022 × 10²³ atoms
1 mol / 6.022 × 10²³ atoms × 2.25 × 10²⁵ atoms
0.17 × 2.25 × 10²⁵ moles
38.25 moles
h = 50 atoms of Ba
1 mole = 6.022 × 10²³ atoms
1 mol / 6.022 × 10²³ atoms ×50 atoms
0.17 × 10²³ × 50 moles
8.5 × 10²³ moles