A sample of hydrogen gas was collected over water at 36°C and 855 mm Hg. The volume of the container was 6.50 L. Calculate the mass of H2 (g) collected. (Vapor pressure of water = 44.6 torr at 36°C) a. 0.58 g b. 9.38 g c. 0.55 g d. 4.69 g e. 0.27 g
A piece of sodium metal reacts completely with water as follows:2Na (s) + 2H2O (t) →2NaOH (aq) + H2 (g)The hydrogen gas generated is collected over water at 23.0°C. The volume of the gas is 187 mL measured at 0.981 atm. Calculate the number of grams of sodium used in the reaction. (The vapor pressure of water at 23.0°C = 0.0277 atm.)
The following reaction forms 14.0 g of Ag(s): 2Ag2O(s) → 4 Ag(s) + O2(g)What total volume of gas forms if it is collected over water at a temperature of 25 ° C and a total pressure of 761 mmHg?
Consider the reaction: 2NiO (s) → 2Ni (s)+ O2 (g) Oxygen gas is collected over water at 40.0°C and a barometric pressure of 745 torr. What volume of oxygen will be collected for the complete reaction of 24.8 g NiO? You must show the key steps in the calculation to get the full credit even for the correct answer.
Consider the following reaction:2NiO(s) → 2Ni(s) + O2(g) If O2 is collected over water at 40.0°C and a total pressure of 744 mmHg, what volume of gas will be collected for the complete reaction of 24.50 g of NiO?
A sample of hydrogen was collected by water displacement at 23.0°C and an atmospheric pressure of 735 mmHg. Its volume is 568 mL. After water vapor is removed, what volume would the hydrogen occupy at the same conditions of pressure and temperature? (The vapor pressure of water at 23.0°C is 21 mmHg.) (a) 509 mL (b) 539 mL (c) 552 mL (d) 568 mL (e) 585 mL
Hydrogen produced from a hydrolysis reaction was colected over water and the following data was compiled. Calculate the moles of hydrogen gas produced by the reaction.
A common way to make hydrogen gas in the laboratory is to place a metal such as zinc in hydrochloric acid. The hydrochloric acid reacts with the metal to produce hydrogen gas, which is then collected over water. Suppose a student carries out this reaction and collects a total of 169.7 mL of gas at a pressure of 749 mmHg and a temperature of 25°C. What mass of hydrogen gas (in mg) does the student collect? Express your answer using three significant figures.