Question

8. How many grams is 9.94 * 10 ^ 22 atoms of calcium (Ca) ?

Answer 1

Answer: 6.61 grams Ca

Step-by-step explanation:

Ca is monoatomic. Atomic mass 40.075

moles of Ca = 9.94x10^22/6.02214076x10^23 (avogadro number)

= 0.16506 mol = 6.61 grams