Frequently Asked Question

Questions asked by users might not always be phrased in the clearest way.

At 570. mm hg and 25 °c, a gas sample has a volume of 2270 ml. What is the final pressure (in mm Hg) at a volume of 1250 ml and a temperature of 175 °c? P1V1/ t1 = P2V2 / t2

Accepted Answer

This problem involves the combined gas law, which relates pressure, volume, and temperature of a gas. Here's how to solve it:
1. Convert temperatures to Kelvin:

T1 = 25 °C + 273.15 = 298.15 K

T2 = 175 °C + 273.15 = 448.15 K
2. Plug the values into the combined gas law equation:

(P1
V1) / T1 = (P2
V2) / T2

(570 mm Hg
2270 mL) / 298.15 K = (P2
1250 mL) / 448.15 K
3. Solve for P2:

P2 = (570 mm Hg
2270 mL
448.15 K) / (298.15 K
1250 mL) ≈ 1530 mm Hg
Therefore, the final pressure is approximately 1530 mm Hg.


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