Use the ideal gas equation of state to answer the following questions. In SI units, the equation is pV=nRT, where R=8.31JK−1 mol−1.
A barometer shows a reading of 29.2inches of mercury. Use g=9.81 ms−2
for this question.
A) Given that 1inch is approximately 2.54cm, and the density of mercury is 13,590 k gm−3, calculate the atmospheric pressure in pascals. I found the answer Atmosphere pressure is 98900 Pa.
B) A gas man uses a manometer to check the pressure of gas delivered to a home. The manometer contains water with a density of 1.0 gcm−3. The diagram below shows the manometer reading. The scale is marked in decimetres. Give the reading from the manometer shown in Figure*1. I also found this answer too, Gas pressure is 3.2 dm.
Please help me with these questions to Part C, D and E.
C) Calculate the difference between the gas pressure and atmospheric pressure.
D) Calculate the absolute (total) pressure of the gas. (Give your answer to 3 significant figures).
E) Calculate the number of molecules supplied per cubic metre of gas at a temperature of 291K and under the pressure calculated in the previous part. (Give your answer to 2 significant figures).
Please help me quickly, it’s due in 2 days.