Although coal is a complex mixture of substances, its elemental composition can be approximated by the formula . Using this formula, predict the amount of CO₂ released from the combustion of 1.00 × 10⁶ metric tons of coal (about the annual average for a coal-fired power plant). 1 metric ton = 1 ×10³ kg.
a. 3.66 × 10⁹ kg
b. 3.11 × 10⁹ kg
c. 8.50 × 10⁸ kg
d. 3.11 × 10⁵ kg

The correct answer is option b.

Explanation:

Mass of coal burned = metric ton = 1.00\times 10^6\times 10^3 kg=10^9 kg[/tex]

1 metric ton =

Molar mass of coal :

1 g = 0.001 kg

Moles of coal ,n :

If 2 moles of coal on combustion gives 270 moles of carbon dioxide than n moles of coal will give;

of carbon dioxide.

Molar mass of carbon dioxide gas = 44 g/mol = 0.044 kg/mol

Mass of of carbon dioxide: