Determine the molar mass of Ca(OH)2

The  theoretical yield of reactions Consider the reaction 1CO(g) + O2 (g) --> 2CO2(g) if 9.420 g CO is mixed with 16.84g O2, CALCULATE THE THEORETICAL YIELD (g) of CO2 produced by the reaction.

Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese(IV) oxide. 4 HCl(aq) + MnO₂ (s) - - MnCl₂(aq) + 2 H₂O(l) + Cl₂(g) A sample of 36.9 g MnO, is added to a solution containing 44.7 g HCI. What is the limiting reactant? MnO₂ HCI What is the theoretical yield of Cl₂? theoretical yield: If the yield of the reaction is 86.3%, what is the actual yield of chlorine? g CL₂

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 ? %

Consider the following unbalanced chemical reaction: Al (s) + HCI (g) → AICI3 (g) + H2 (g) 1. Balance the chemical equation 2. How many moles of aluminum metal are needed to produce 3.33 moles of aluminum chloride? 3. Calculate the mass of aluminum metal (g) needed to produce 3.33 moles of aluminum chloride.

2 N₂O5(g) --> 4 NO₂(g) + O₂(g) True/False: The equation is already balanced as it is written.

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).

Consider the reaction: Br2(g) + 3F2(g) + 2BRF3(g) Calculate the theoretical yield (in grams) for BrF3(g) when 0.100 mol of Br2 (g) is reacted with 0.150 mol of F2(g).

When copper is heated in air, copper(II) oxide is formed. In a given experiment, 3.12 g copper was heated to yield 3.56 g copper(II) oxide. What is the percent yield of this reaction? (Units Required) 2Cu (s) + O2 (g) -> 2CuO (s)

Aluminum chloride is made from scrap aluminum through the following balanced reaction. 2 Al (s)   +   3 Cl2 (g)   -->  2 AlCl3 (s)  a.  If you begin with 19.7 moles of aluminum and 9.88 grams of chlorine, how much aluminum trichloride is produced? b. What is the mass of excess reagent?