Aluminum reacts with aqueous sodium hydroxide to produce hydrogen gas according to the following equation: 2Al(s) + 2NAOH(aq) + 6H2O(1)–→2NAAI(OH)4(aq) + 3H2(g) The product gas, H2, is collected over water at a temperature of 20 °C and a pressure of 757 mm Hg. If the wet H2 gas formed occupies a volume of 9.31 L, the number of grams of H2 formed is g. The vapor pressure of water is 17.5 mm Hg at 20 °C.

If boron hydride, B4H10, is treated with pure oxygen, it burns to give B2O3 and H2O: 2 B4H10(s) + 11 O2(g) ®4 B2O3(s) + 10 H2O(g) If a 0.050-g sample of the boron hydride burns completely in O2, what will be the pressure of the gaseous water in a 4.25-L flask at 30.0°C?

5 & 6 go together.

04/22/ 2021 ot art e b NAME Kouri KulRu DATE SECTION POSTLABORATORY ASSIGNMENT 1. Calculate the theoretical percentage of water for the following hydrates. (a) manganese(II) monohydrate, MnSO4 • H2O (b) manganese(II) tetrahydrate, MNSO4 • 4H2O 2. An unknown hydrate, AC• XH»O, has a mass of 1 .00 g before heating, and 0.738 g atter heating. What is the experimental percentage of water in the hydrate? ombvl lo slmo noihesilla logataW If the anhydrous compound (AC) has a molar mass of 101 g/mol, what is the water of crystallization (X) and the formula for the hydrate (AC XH,O)?ouphut suf (snoilgo) ai sh Formula of hydrate AC H20 Water of crystallization

When zinc metal is added to hydrochloric acid, the following reaction takes place Zn(s) + 2 HCl(aq) → ZnCl₂(aq) + H₂(g) Calculate the volume of H₂ gas collected over water at 30.0 °C when 71.9 g of zinc is added to excess hydrochloric acid if the total pressure is 695 torr. The vapor pressure of water at 30.0 °C is 31.8 torr.

The human body burns glucose C6H12O6 for energy according to this chemical reaction:→+C6H12O66O2+6CO26H2O. The products of the reaction are carbon dioxide CO2 and water H2O. Interestingly, all of the carbon dioxide and much of the water exits the body through the lungs: on every breath, the average person exhales 500.mLof air, which is typically enriched to 4% CO2 and 5% water vapor by volume. In short, when a person loses weight by dieting, the weight that is lost actually departs his body as a gas, every time he exhales. Each kilogram of body fat lost requires exhaling about 3.0kg of carbon dioxide. Calculate how many breaths it takes an average person to "exhale" 2.00kg of fat. Round your answer to the nearest thousand. You'll need to know that the density of CO2 is 2.0/kgm3

Suppose that a 26.4mL volume of HCl solution reactions completely with 55.0 mL of aqueous Na2CO3. The volume of CO2 formed is 148 mL at 23 degrees Celsius and 732 mmHg. What is the molarity of the HCl solution?

What is the molarity of a HClHCl solution if the reaction of 215. mLmL of the HClHCl solution with excess CaCO3CaCO3 produces 12.2 LL of CO2CO2 gas at 725 mmHgmmHg and 18∘C∘C?

1) a) Sulfuric acid, the industrial chemical produced in the greatest quantity each year, is prepared by the reaction of sulfur in the presence of oxygen and water as described in the balanced chemical equation below. Calculate the volume, in ml, of 18.0 M sulfuric acid solution that can be prepared from the reaction of 1850 g of sulfur with 6.50x10'mL oxygen gas at 25°C and 0.965atm and plenty of water. 25(solid) + 302 (gas) + 2H20(liquid) _-→ 2H2SO4(aqueous) b. Which substance is the limiting reactant? Explain how you know.

What volume of carbon dioxide gas (in mL) at 835 mm Hg and 37 °C can be produced when 2.4 g of CaCO3(s) are put into an Erlenmeyer flask containing 108 mL of 0.152 M HCl(aq) ?1 CaCO3(s) + 2 HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)