VISION B Page 4 of 7 11. Faith collected oxygen gas in the laboratory by bubbling...
9. Ndeye collected oxygen gas in the laboratory by bubbling them into a bottle filled with water and then inverted it under water. The gas is in contact with the water, some water in the form of gas, or vapor, is mixed with the collected oxygen. If the atmospheric pressure is 760 torr and the partial pressure of water vapor is 23.0 torr, what is the pressure of oxygen collected under this condition? a. 760 torr b. 737 torr Pavtialpesse...
A 100 mL sample of oxygen gas is collected over water at 26 °C and at a pressure of 756 torr. Given that the vapor pressure of water at 26 °C is 25 torr, how many moles of dry oxygen are present? Show all steps and explain fully. ANSWER: 3.9 x 10^-3 mol
Sodium metal reacts with water to produce hydrogen gas according to the following equation: 2Na(s) + 2H2O(l)2NaOH(aq) + H2(g) The product gas, H2, is collected over water at a temperature of 20 °C and a pressure of 753 mm Hg. If the wet H2 gas formed occupies a volume of 5.60 L, the number of moles of Na reacted was ____ mol. The vapor pressure of water is 17.5 mm Hg at 20 °C.
11. At elevated temperatures, sodium chlorate decomposes to produce sodium chloride and oxygen gas. A 0.8685-g sample of impure sodium chlorate was heated until the production of oxygen gas ceased. The oxygen gas collected over water occupied 51.2 mL at a temperature of 25°C and a pressure of 731 torr. Calculate the mass percent of NaClO3 in the original sample. (At 25°C the vapor pressure of water is 23.8 torr.)
Use the References to access important values if needed for this question. Aluminum reacts with aqueous sodium hydroxide to produce hydrogen gas according to the following equation: 2Al(s) + 2NaOH(aq) + 6H20(1)—>2NaAl(OH)4(aq) + 3H2(g) The product gas, H,, is collected over water at a temperature of 20 °C and a pressure of 749 mm Hg. If the wet H, gas formed occupies a volume of 6.55 L, the number of grams of H, formed is g. The vapor pressure of...
a) A sample of oxygen gas is collected by displacement of water at 25°C and 1.13 atm total pressure. If the vapor pressure of water is 23.756 mm Hg at 25°C, what is the partial pressure of the oxygen gas in the sample? WebAssign will check your answer for the correct number of significant figures. mm Hg b) Calcium oxide can be used to "scrub" carbon dioxide from air. CaO(s) + CO2(g) → CaCO3(s) What mass of CO2 could be...
4. In general chemistry labs, a gas is often collected over water. The total pressure inside a collection bottle is represented by Protal= Pgas + PH2o. The vapor pressure of water at 23.0 °C is 21.07 torr. Hydrogen gas produced from the following reaction. Zn (s) + H2SO4 (aq) → ZnSO4(aq) + Hz (g) a) If 157 mL of wet H2 is collected over water at 23.0°C and a barometric pressure of 738.0 torr, calculate the moles of H2 that...
1. A volume of 80.0 liters of oxygen is collected over water at 40.0 °C. The atmospheric pressure in the room is 0.980 atm. What is the partial pressure of the oxygen? The vapor pressure of water at 40 °C is 55.324 torr. A) 0.907 atm B) 0.689 atm C) 0.815 atm D) 0.784 atm E) 1.05 atm 2. A closed 5.00 L container is filled with a mixture of 4.00 moles of hydrogen gas, 8.00 moles of oxygen, 12.0...
A sample of hydrogen gas was collected over water at 36 degree C and 855 mm Hg. The volume of the container was 6.50 L. Calculate the mass of H_2(g) collected. (Vapor pressure of water = 44.6 torr at 36 degree C) a. 0.58 g b.9.38 g c.0.55 g d.4.69 g e. 0.27 g
28. A sample of oxygen is collected over water at 22°C and 752 mmHg in a 125 ml flask. The vapor pressure of water at 22°C is 19.8 mmHg. a. What is the partial pressure of oxygen? b. How many moles of dry gas are collected? C. How many moles of wet gas are in the flask? d. If 0.0250 g of N, are added to the flask at the same temperature, what is the partial pressure of nitrogen in...