Question

If you have 9.50 x 10-20 moles of methane gas, how many molecules of methane gas do you have? (Be sure to give your answer with the correct significant figures.)

________ molecules Do not use scientific notation to enter your number for this question.

Answer 1

Answer on Question #53137 – Chemistry – General Chemistry

Question:

If you have $9.50 \times 10^{-20}$ moles of methane gas, how many molecules of methane gas do you have? (Be sure to give your answer with the correct significant figures.)

Answer:

1 Mole of any substance consists of $6.02214129 \times 10^{23}$ particles. Number of methane molecules is:

$$N = 9.50 \times 10^{-20} \times 6.02214129 \times 10^{23} = 57210 \text{ molecules of methane gas}$$

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