A sample of hydrogen (H2) gas was collected over water at 60°C. If the total volume of gas collected was 71.8 mL and the atmospheric pressure was 1.02 bar, what mass (in g) of hydrogen gas was collected above the water? The vapour pressure of water at 60°C is 150 torr.

1. Calculate the volume of carbon dioxide adjusted to 25 °C and 1 atm, that plants need to make 1.00 g glucose, CóH12O6, by photosynthesis in the reaction 6CO2(g) + 6H20(I) C6H1206(s) + 602 (g).

The partial pressure of O2 in the atmosphere at sea level is 21.3 kPa.  What is the partial pressure of O2 on the top of a mountain, where the atmospheric pressure is 89.7 kPa? [Atmospheric pressure at sea level is 101.3 kPa.]

A student experimentally determines the gas law constant, R, by reacting a small piece of magnesium with excess hydrochloric acid and then collecting the hydrogen gas over water in a eudiometer. Based L-atm on experimentally collected data, the student calculates R to equal 0.0832 mol·K L-atm Ideal gas law constant from literature: 0.08206 mol·K (a) Determine the percent error for the student's R-value. Percent error = % (b) For the statements below, identify the possible source(s) of error for this student's trial. The student notices a large air bubble in the eudiometer after collecting the hydrogen gas, but does not dislodge it. The student does not clean the zinc metal with sand paper. The student does not equilibrate the water levels within the eudiometer and the beaker at the end of the reaction. The water level in the eudiometer is 1-inch above the water level in the beaker. The student uses the barometric pressure for the lab to calculate R.

Use your text or other reference to find the partial pressure of water at 25°C, 26°C, and 27°C and record those values.

If the partial pressure of N2 is 2.70 x 105 Pa and the partial pressure of Ne is 5.00 x 105 Pa in a given mixture, what is the mole fraction of Ne (XNe)?

A mixture consiting of 1.000 mol H2O(g) and 1.000 mol CO(g) is placed ina  reaction vessel of volume 10.00 L at 800. K. At equilibrium, 0.665 mol CO2(g) is present as a result of the reaction CO (g) + H2O (g)⇋ CO2(g)+H2(g). What are the value of KC at 800. K?