A sample of dry solid waste has the following composition : 531 g carbon (C), 133 g hydrogen (H), and 335 g oxygen(O) . How many liters of air is required to combust the waste.

What mass of CO2 is produced from the combustion of 1 gal of gasoline? The chemical formula of gasoline can be approximated as C8H18. Assume that there are 2801g of gasoline per gallon.

If 6.5 kg of CO₂ are produced during a combustion reaction, how many molecules of CO₂ would be produced?

9 a Carbon dioxide is removed from the atmosphere of space capsules by reaction with a solid metal hydroxide. The products are water and the metal carbonate. (a) Calculate the mass of CO₂ that can be removed by reaction with 3.39 kg of lithium hydroxide. x 10 g CO₂ (b) How many grams of CO₂ can be removed by 0.35 kg of each of the following: lithium hydroxide, magnesium hydroxide, and aluminum hydroxide? By lithium hydroxide: x 10 g CO₂ By magnesium hydroxide: x 10 g CO₂ By aluminum hydroxide: x 10 g CO2 & 2 3 # 3 e с $ 4 in de % 5 t A y 7 U 8

Lead(II) oxide from an ore can be reduced to elemental lead by heating in a furnace with carbon. Calculate the expected yield of lead if 67.0 kg of lead oxide is heated with 67.0 kg of carbon.

Lead ions can be precipitated from solution with KCl according to the reaction: Pb2+ (aq) + 2KCl(aq) → PbCl₂ (s) + 2K+ (aq) When 34.3 g KCl is added to a solution containing 25.8 g Pb²+, PbCl2 (s) forms. The solid is filtered and dried and found to have a mass of 30.9 g. theoretical yield of PbCl2 = 25.8 g Ph Part C % yield = Determine the percent yield for the reaction. Express your answer in percent to three significant figures. 15 ΑΣΦ X Ċ 1 mel P5²+ 1 mol 1 met X 207.2 g Pb² ? %

14. A substance is found by analysis to contain 45.57% tin and 54.43% chlorine. What is the empirical formula for the substance? 15. Aluminum sulfide reacts with water to form aluminum hydroxide and hydrogen sulfide. a) Write a balanced equation for this reaction. b) How many grams of aluminum hydroxide can be obtained from 5.50 g of aluminum sulfide? 16. When copper (1) sulfide is partially roasted in air (reaction with 02), copper(1) sulfite is formed first. Subsequently, upon heating, the copper sulfite thermally decomposes to copper (1) oxide and sulfur dioxide. Write balanced chemical reactions for these two reactions. 17. Write the molecular, complete ionic & net ionic equation for a single replacement (redox) reaction between zinc and copper (ii)sulfate? Identify the oxidized and the reduced species. 18. How many grams of Mg(OH)2 will be needed to neutralize 25 ml of stomach acid if stomach acid is 0.10M HCI? 19. How many litres of 3.4 M HI will be required to reach the…

If 4.9 kg of CO2 are produced during a combustion reaction, how many molecules of CO2 would be produced?

Grease fires can be extinguished by applying baking soda (sodium hydrogen carbonate), which decomposes due to the heat to produce sodium oxide, carbon dioxide and water. The carbon diocide produced helps to smother the flames. How many grams of baking soda would need to be thrown on to a fire to produce 0.500 moles (approximately 11 L) of carbon dioxide gas?

The coefficients in a balanced chemical equation provide the mole-to- mole stoichiometry among the reactants and products. The molar mass (in g/mol) can be used as the conversion factor between moles and the mass of a substance. Thus, the balanced equation and molar masses can be used in conjunction with one another to calculate the masses involved in a reaction. Complete combustion of methane When methane (CH4) burns, it reacts with oxygen gas to produce carbon dioxide and water. The unbalanced equation for this reaction is CH₂(g) + O₂(g) →CO₂(g) + H₂O(g) This type of reaction is referred to as a complete combustion reaction. Review Constants Perio Part A What coefficients are needed to balance the equation for the complete combustion of methane? Enter the coefficients in the order CH4, O2, CO2, and H₂O, respectively. Express your answer as four integers, separated by commas (e.g., 1,2,3,4).