A catalytic converter in an automobile uses a palladium or platinum catalyst (a substance that increases the rate of a reaction without being consumed by the reaction) to convert carbon monoxide gas to carbon dioxide according to the reaction:2 CO( g) + O2( g)------------> 2 CO2( g)A chemist researching the effectiveness of a new catalyst combines a 2.0:1.0 mole ratio mixture of carbon monoxide and oxygen gas (respectively) over the catalyst in a 2.45-L flask at a total pressure of 745 torr and a temperature of 552 °C. When the reaction is complete, the pressure in the flask has dropped to 552 torr. What percentage of the carbon monoxide was converted to carbon dioxide?

The combustlon of propane (C,H,) In the presence of excess oxygen ylelds CO, and H,0 as shown below. C,H, (g) + 50, (95→ 3Co, (g) + 4H,0 (g) When 2.5 mol of O, are consumed in this reaction, mol of CO, are produced. O 2.5 1.5 O 5.0 O3.0

Q) Drinking water may contain several unwanted ions such as phosphate ions. In order to remove the phosphate ions from the drinking water, a solution of calcium hydroxide can be added. As a result, a solid Ca5OH(PO4)3 is formed and isolated by filtration and a hydroxide ion are also formed. The reaction for this process is below: 5 Ca(OH)2 (aq) + PO43- (aq) → Ca5OH(PO4)3 (s) + OH- (aq) a) If 3.00 mL of 0.100 M calcium hydroxide is mixed with 4.00 mL of an aqueous solution of 0.0800 M phosphate ions (PO43-). What is the mass of Ca5OH(PO4)3 that can be isolated from the reaction? b) How many moles of the excess reactant remains unreacted? c) What is the concentration of the hydroxide ions in this solution? d) What is the mass of calcium (in grams) that can be recovered?

Aspirin can be synthesized in the lab by combining salicylic acid (C,H,0,) and acetic anhydride (C,H,O,) to form aspirin ( C, H,O,) and acetic acid (C,H,O,). The balanced equation for this reaction is C,H,O, + C,H,O, → C,H¿O4 + C,H,O, A student started with 4.02 mL acetic anhydride (density of aspirin. = 1.08 g/mL) and 2.41 g salicylic acid. The student synthesized 2.41 g Select the limiting reactant. acetic anhydride (C,H,O,) salicylic acid (C,H,0,) O acetic acid (C,H,O,) aspirin (C,H¿O,) Calculate the theoretical yield of aspirin (C,H,O4). theoretical yield: g Calculate the percent yield for aspirin (C,H,O4). percent yield:

The reaction for producing glucose in plants, called photosynthesis, is   6CO2+6H2O−→−−lightC6H12O6+6O2 6CO2+6H2O→lightC6H12O6+6O2    If a plant produces 5.81 mol C6H12O6,5.81 mol C6H12O6, how many moles of CO2CO2 are needed? moles CO2CO2:

Fill in the blanks to complete the sentences about the final reaction of the copper cycle. Not all terms will be used. The final reaction of the copper cycle is a In this reaction, Mg is the reaction and should result in the formation of and copper(II) sulfate is the Answer Bank magnesium metal copper metal oxidizing agent solid magnesium sulfate double-displacement reducing agent single-displacement decomposition

Classify each chemical reaction: Reaction Cl₂(g) + 2KI (aq) → 2KCl(aq) + 1₂ (s) H₂SO₂ (aq) H₂O(l) + SO₂ (g) PbCl₂ (aq) + FeSO (aq) → FeCl₂ (aq) + PbSO₂ (s) Mg(s) + F₂ (g) → MgF₂ (s) Type choose one choose one choose one choose one X Ś

Solid copper can be produced by passing gaseous ammonia over solid copper (II) oxide at high temperatures, according to the following reaction.   NH3 (g) + CuO (s) → N2 (g) + Cu (s) + H2O (g)  Balance the reaction.

The reaction for producing glucose in plants, called photosynthesis, is   6CO2+6H2O−→−−lightC6H12O6+6O2 6CO2+6H2O→lightC6H12O6+6O2    If a plant produces 7.56 mol C6H12O6,7.56 mol C6H12O6, how many moles of CO2CO2 are needed?

A tiny sample of an aqueous solution of two substances R and P is sketched below, as if it was under an imaginary microscope so powerful that individual molecules could be seen. (The water molecules are not shown.) 8 R and P can interconvert. That is, R can turn into P, and P can turn back into R: 113 5 R (aq)=P(aq) R P number of R molecules: number of P molecules: K= The equilibrium constant K for this equilibrium is interconversion reaches equilibrium. $3/1₁ Predict the number of R and P molecules in this sample when the . X