Consider the following chemical reaction: 2Al(s) + 3H₂SO4 (aq) → Al2(SO4)3 (aq) + 3H₂(g) A student collected 316 mL of hydrogen gas over water at a temperature of 29.0 °C and an atmospheric (total) pressure of 771 torr. The vapor pressure of water at 29.0 °C is 30.0 torr. Calculate the mass (g) of aluminum metal required to produce the hydrogen gas.

The partial pressure of water vapor in saturated air at 34 °C is 5.25×10-2 atm. (a) How many molecules of water are in 1.16 cm3 of saturated air at 34 °C? (b) What volume of saturated air at 34 °C contains 0.563 mol of water?

Give typed solution only

A flask of volume 0.753 L contains a sample of chlorine gas, Cl2, with a pressure of 198 Torr at 25.8 degrees C What mass of sodium, in grams, is required to completely react with the chlorine to make sodium chloride? 2 Na (s) + Cl (g) - - > 2 Na C1 (s)

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.]

When collecting a gas over water it is necessary to correct for the vapor pressure of water in order to determine the pressure of the gas you are collecting. We will do this by using a graph of ln P in mmHg versus 1/T where T is the temperature in Kelvin. The equation is y = -5206.4 x + 20.621 (With an R^2 = 0.9999). If you collect a gas at 26.8 ℃, what is the value of “x” that you want to use in the equation. (Keep the answer for the next question). (Keep extra digits, you do not want to round in the middle of this calculation). Select one:   a. 0.003660992 b. 0.037313433 c. 0.003378378 d. 299.95 e. 0.0273150 f. 273.15 g. None of these h. 0.003333889 i. 0.0027315

A sample of H2(g) was collected over water in a volume of 12.0 mL at 18 °C under atmospheric pressure of 770. Torr. Partial pressure of water is P(H2O, 18 °C) = 16 Torr. Find the mol’s of H2(g) in the sample

PV=nRT R=0.0821 atm•L/mol•K °C + 273.15 = K 1 atm = 760 mmHg Many metals produce hydrogen gas when dropped in water. For example: Ca (s) +2 H20 (1) → Ca(OH)2 (aq) + H2(g) How much hydrogen gas (in liters) would be produced from dropping 5.0 grams of Calcium into an excess of water, at 25°C and 755 mmHg?

If 51.2 grams of carbonic acid are sealed in a 2.00 L soda bottle at room temperature (298.15 K) and decompose completely via the equation below, what would be the final pressure of carbon dioxide (in atm) assuming it had the full 2.00 L in which to expand? H₂CO₃(aq) → H₂O(l) + CO₂(g)

Suppose that a 26.5-mL volume of HCl solution reactions completely with 55.0 mL of aqueous Na2CO3.  The volume of CO2 formed is 137. mL at 26.°C and 726. mmHg.  What is the molarity of the HCl solution?