Question

calculate the no of molecules of carbon dioxide in 4.4g of carbon dioxide gas​

Answer 1

Answer:6.023×10^22

Explanation:

Answer 2

Answer:

Number of molecules in 4.4g of \bold{\mathrm{CO}_{2} =6.022 \times 10^{22}}

Explanation:

The ‘molar mass’ of carbon (C) = 12.011 g/mol

The ‘molar mass’ of oxygen (O) = 31.998 g/mol

Total ‘molar mass’ of \mathrm{CO}_{2} = 44.009 g/mol

Moles =\frac{\text {the given mass}}{\text {total molar mass}}

Moles =\frac{4.4}{44} = 0.1 mol

Moles =\frac{4.4}{44} = 0.1 mol

The formula for number of molecules =\text { total moles of molecules } \times \mathrm{N}_{\mathrm{A}}

Number of molecules in 4.4g of \mathrm{CO}_{2} = 0.1 \times 6.022 \times 1022

Number of molecules in 4.4g of \mathrm{CO}_{2} =6.022 \times 10^{22}

The "number of molecules" in a known mass of an element or compound is calculated based on the fact that 'one mole of a compound ' contains 6.022 \times 10^{22} molecules and this number is the Avogadro constant.