Question

the no. of gram atoms in 3.2g of Ca

Answer 1

Answer of this question is 0.08
Atomic mass of calcium is 40 and 3.2/40=0.08 hope it was helpful plzzz mark as brainliest.

Answer 2

In order to calculate the number of gram atoms in 3.2g of Calcium is 0.08gm atom.  

We need to know the following information:

Gram atomic weight of Calcium (Ca) = 40gm

Number of moles $=\frac{\text {Given mass}}{\text {mass}}$

Number of moles of Calcium (Ca) present in 3.2 gram $=\frac{3.2}{40}\ \mathrm{mole}=0.08\ \mathrm{mole}$

Now, 1 mole of every substance contains = 1 gm atom.

Therefore, 0.08 mole contains $\bold{=\frac{1}{1} \times 0.08 \mathrm{gm} \text { atom }=0.08 \mathrm{gm}\ atom}$.