Question

Find the number of Ca²⁺ ions in 3×10⁻³ g of CaCO₃.

Answer 1

Answer:

Answer

Correct option is

B

3.44×10

22

ions

Given 3.2g CaO

atomic mass = 40+16

=56

moles of Ca ion =

56

3.2

=0.057

1 mol = 6.022×10

23

atoms of Ca ion

0.057mol=3.44×10

22

Ca ions

Answer 2

Answer:

Explanation:

Ca 2