Question

Calculate the actual mass of 0.25 gram atom of calcium.

Answer 1

Step 1: mass of 0.25 gram atom of calcium.

Step 2:

No. of gram atoms $=\frac{\mathrm{given}\mathrm{mass}}{\mathrm{atomic}\mathrm{mass}}$

Step 3:

$0.25=\frac{\times }{40}$

$\times =40\times 0.25$

$=10\mathrm{gm}$

Mass of 0.25 g atom of calcium = 10 gm.