Question

If 5.9 × 10²⁵ molecules of CO₂ are produced in a combustion reaction, what is the mass in kg of CO₂ that is produced?

Answer 1

Explanation:

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Answer 2

The molar mass of carbon dioxide is 44 g.

Molar mass is the mass of 1 mole of a given substance.

1 mole of carbon dioxide contains 6.022 × 10²³ molecules

We have been asked the mass of  5.9 × 10²⁵ molecules of CO₂

mass of 6.022 × 10²³ molecules = 44 g

∴ mass of  5.9 × 10²⁵ molecules =  44 ×5.9 × 10²⁵/6.022 × 10²³

                                                    =43.1 × 10² g

                                                     =4.31 kg

The mass of 5.9 × 10²⁵ molecules of CO₂ will be 4.31 kg.