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Ronch [10]
2 years ago
12

A sample of air has a volume of 140.0 mL at 67C. To w

Chemistry
1 answer:
bonufazy [111]2 years ago
7 0

Answer:

What that means is that when pressure and number of moles are kept constant, increasing the temperature will result in an increase in volume. Likewise, a decrease in temperature will result in a decrease in volume. In your case, the volume of the gas decreased by a factor of about 3, from "140.0 mL" to "50.0 mL".

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\large \boxed{5.5 \times 10^{22}\text{ molecules of P$_{2}$O}_{5}}

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\text{Moles of P$_{2}$O}_{5} = \text{0.0458 mol P$_{4}$O}_{10} \times \dfrac{\text{2 mol P$_{2}$O}_{5}}{\text{1 mol P$_{4}$O}_{10}} = \text{0.0916 mol P$_{2}$O}_{5}

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