Question

the molar mass of oxygen gas (o2) is 32.00 g/mol. the molar mass of c3h8 is 44.1 g/mol. what mass of o2, in grams, is required to completely react with 0.025 g c3h8? 0.018 grams 0.034 grams 0.045 grams 0.091 grams

Answer 1

The following is the reaction's balanced chemical equation:

C3H8 + 5O2 = 3CO2 + 4H2O ,

According to a molar ratio of 1:5, the number of moles of C3H8 that were involved in the reaction was 0.025 g / 44.1 g/mol = 0.000567 mol. The number of O2 moles needed is 5 times the number of C3H8 moles that were reacted, hence the number of O2 moles needed is 0.000567 x 5 = 0.00284 mol. The needed mass of O2 is 0.00284 mol times 32.00 g/mol, or 0.091 mol. response is 0.091 mol

In chemistry, what does a molar mass mean?

A substance's molar mass is defined as its mass in grams per mole. As seen in this video, the molar masses of a substance's constituent atoms may be added to determine the substance's molar mass.

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