Question

0.2 mole of calcium atom​

Answer 1

Explanation:

Calcium is an alkaline earth element present in several chemical compounds and products. The periodic table provides a lot of valuable information on calcium and other elements, including their molar mass. A mole is a unit that represents 6.023 x 10^23 atoms of an element or molecules of a compound. The molar mass is normally given in the units of grams per mole; however, these are easily converted to English units.