Question

Calculate the number of particles in 12g of O2 molecules.​

Answer 1

hlo mate here is your answer.

Multiply the number of molecules in your sample by the atoms per molecules, Avogadro's number. The result is the final answer -- thenumber of atoms in your sample. In the example you calculated.222 molecules. Multiply .222 moles by 6.022 x 10^23 atoms per mole to arrive at the answer, 1.34 x 10^23 atoms.

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Answer 2

(a) 32 g of oxygen gas = 1 mole.

Then, 12g of oxygen gas = 12/32 mole = 0.375 mole.

(b) 18g of water = 1 mole.

Then, 20 g of water = 20/18 mole = 1.11 moles (approx.)

(c) 44g of carbon dioxide = 1 mole.

Then, 22g of carbon dioxide = 22/44 mole = 0.5 mole.