Chem 120 Midterm Exam 1 (Latest 2023 - 2024) New Full Exam Questions and Answers ( Included ) 100% Correct

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1. Properties of gases Answer: - fill and assume shape of container - diffuse and mix in all proportions with other gases - molecules in gas are separated by large distances and interact weakly wi... th each other 2. Variables that describe any gas Answer: - nb of moles - temperature - pressure - volume 3. Pressure Answer: - In Pa - Force (N)/Area (m^2) - force per unit area - Force = area x height x density x force of gravity - So pressure = Height x density x force of gravity 4. Atmospheric pressure Answer: 760 mm Hg760 torr 1 atm 101325 Pa 5. Manometer Answer: - measure pressure of confined volume of gas - P(gas) = P(bar) when height of Hg is equal on both sides - when P(gas) > P(bar), P(gas)= P(bar) + change in P - when P(gas) < P(bar), P(gas)= P(bar) - change in P 6. Ratio of heights (h) Answer: - inversely related to the ratio of the densities of the liquid(d) h (H2O)/ h (Hg) = d(Hg)/d(H2O) 7. Boyle's law Answer: - volume is inversely proportional to pressure - PV = constant - V1P1 = V2P2 [Show More]

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