Question

There are 9.88x1023 molecules of O2 available.

a.How many moles of O2?

b. How many grams of CO2 can form?

Answer 1

1.64 moles O₂

Step-by-step explanation:

Part A:

Remember 1 mole of particles = 6.02 x 10²³ particles

So, the question becomes, how many '6.02 x 10²³'s are there in 9.88 x 10²³ molecules of O₂?

This implies a division of given number of particles by 6.02 x 10²³ particles/mole.

∴moles O₂ = 9.88 x 10²³ molecules O₂ / 6.02 x 10²³ molecules O₂ · mole⁻¹ = 1.64 mole O₂

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Part B needs an equation (usually a combustion of a hydrocarbon).