Answer:
Total moles of ions are released in water are 
.
Explanation:
Mass of calcium nitrate = 
Molar mass of calcium nitrate = 164 g/mol
Moles of calcium nitrate = 
According to reaction, 1 mole of calcium nitrate gives 1 mole of calcium ions, then 
moles of calcium nitrate will give:
of calcium ions
According to reaction, 1 mole of calcium nitrate gives 2 mole of nitrate ions, then moles of calcium nitrate will give:
of nitrate ions
Total moles of ions are released :
The number of calcium atoms that would be in a 100 g sample of calcium is 1.505 x 10²⁴ atoms
<u><em>calculation</em></u>
Step 1 ; find the moles of calcium
moles = mass÷ molar mass
from periodic table the molar mass of Ca =40 g/mol
moles is therefore = 100 g÷ 40 g/mol = 2.5 moles
Step 2: use the Avogadro's law constant to determine the number of atoms of Calcium
That is According Avogadro's law 1 mole = 6.02 × 10²³ atoms
2.5 moles=? atoms
{(2.5 moles × 6.02×10²³ atoms) / 1 mole} = 1.505 × 10²⁴ atoms
Explanation:
The compound 
is also known as carbon dioxide. It is a gas. It forms when one carbon atom combines with two oxygen atoms.
This can be illustrated as follows.
Consumption of carbon dioxide gas in very low concentrations is not harmful but consumption of its large concentration is very harmful as it can affect the respiratory system.
