4. Consider the mass% hydrogen peroxide experiment Catalase 2H,02(aq) 2H20(1) + 02(g) 3.00mL of a hydrogen peroxide solution is used in this experiment and 36.00mL of oxygen gas is trapped in the apparatus. The air temperature is 23.0°C. What is the mass% of H202 in the solution?

4. Consider the mass% hydrogen peroxide experiment Catalase 2H,02(aq) 2H20(1) + 02(g) 3.00mL of a hydrogen peroxide solution is used in this experiment and 36.00mL of oxygen gas is trapped in the apparatus. The air temperature is 23.0°C. What is the mass% of H202 in the solution?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Air is a mixture of several gases. The 10 most abundant of these gases are listed here along with their mole fractions and molar masses. Molar mass Component Mole fraction (g/mol) 28.013 31.998 39.948 44.0099 20.183 4.003 16.043 83.80 2.0159 Nitrogen 0.78084 Oxygen 0.20948 Argon 0.00934 Carbon dioxide 0.000375 Neon 0.00001818 Helium 0.00000524 Methane 0.000002 0.00000114 Krypton Hydrogen 0.0000005 Nitrous oxide 0.0000005 44.0128 Part A What mass of carbon dioxide is present in 1.00 m³ of dry air at a temperature of 19 °C and a pressure of 687 torr? Express your answer with the appropriate units. ▸ View Available Hint(s) 0 Value Submit Part B μᾶ O Submit μÀ Value 3 Calculate the mass percentage of oxygen in dry air. Express your answer with the appropriate units. ▸ View Available Hint(s) B Units ? Units ?
What is the boiling point elevation of a solution consisting of 125.1 g sucrose, C12H22O11, dissolved in 115.7 g of water, ? Kb = 0.512 °C/m.
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 6.50E4ML oxygen gas at 25°C and 0.965atm and plenty of water. 25(solid) + 302 (gas) + 2H20(liquid) > 2H:SO4(aqueous) b. Which substance is the limiting reactant? Explain how you know.
10. A piece of sodium metal reacts completely with water as follows: 2Na) + 2H2OM > 2NªOH(aq) + H2) The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 246 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapour pressure of water at 25.0°C = 0.0313 atm)
Calculate the mass of dissolved nitrogen at 25°C in an aquarium containing 73.4 L of water. Assume that the total pressure is 98 kPa and that the mole fraction of nitrogen in air is 0.78.It is recalled that the partial pressure of a gas in a gas mixture can be determined from the total pressure and its mole fraction (Dalton's Law).
In an offshore oil-drilling operation at 1500 m depth, gas X was found at the seabed at a temperature of 520 °C and pressure of 15.40 atm. i. Calculate the volume of gas X that needs to be transferred from the seabed to a valve container with a volume of 2.90 x 104 litres at the refinery tower if the pressure must be retained at 1.00 atm and the temperature at 21 °C. ii. Determine the mass of gas X that needs to be transferred. [Molar mass of X = 16 gmol-1]
write out the chemical balance equation and please do it step by step so i can understand. Part D Hg2 (C,H3O2)2 (aq) + KCl(aq) → Hg2 C2 (s) + KC, H3 02 (aq) Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣφ Hg(C,HO,),(aq) + A chemical reaction does not occur for this question.
Explain and sketch the Born-Mayer equation to determine the crystallization energy of NaCl and MgCl2
A gaseous mixture contains 18% oxygen, 78% nitrogen and the remaining is that of an unknown gas. The mass fraction of oxygen in the mixture is 0.19613. What is the unknown gas and what is its mass fraction in the mixture?
What is the gravitational force of attraction for two protons separated by 75 pm?
1. One of the first families of rockets used by the American space program was the Redstonefamily of rockets. The first Redstone rockets (in the 1950s) used B10H14 (often called decaborane)as a rocket fuel that reacts violently with liquid di-oxygen to make diboron trioxide and steam.When used as a rocket fuel, scientists carefully calculated the amount necessary so that bothcomponents ran out at the same time. (Excess fuel would be excess weight for the rocket tocarry.) If the total mass of both reactants put together is 12.0  104 kg, what was the volume ofliquid di-oxygen carried by the rockets? (Liquid di-oxygen has a density of 1.141 g/mL.)
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.