front 1 What is the sum of the coefficients of this reaction, after balancing? Pb(NO3)2 + Na3PO4 -----> Pb3(PO4)2 + NaNO3 (OR Pb(N O3)2 + N a3P O4 right arrow Pb3(P O4)2 + N a N O3) | back 1 12 |
front 2 What is the sum of the coefficients of this reaction, after balancing? C7H14 + O2 ----> CO2 + H2O (OR C7H14 + O2 right arrow C O2 + H2O) | back 2 15 |
front 3 What is the sum of the coefficients of this reaction, after balancing? NH4I + Cl2 -----> NH4Cl + I2 (OR NH4I + Cl2 right arrow NH4Cl + I2) | back 3 6 |
front 4 Use the following balanced chemical equation C6H12 + 9 O2 ----> 6 CO2 + 6 H2O (OR C6H12 + 9 O2 right arrow 6 CO2 + 6 H2O) How many moles of O2 can react with 1.50 mol of C6H12? 1 mole of a gas at STP is 22.414 Liters Do not type units with your answer | back 4 14.03 WRONG |
front 5 Use the following theoretical equation A2B3 + 3 C2D --> A2D3 + 3 C2B (OR A2 B3 + 3 C2 D right arrow A2 D3 + 3 C2 B) Calculate the number of molecules of C2B formed from the reaction of (9.70000x10^1) grams of A2B3 and (1.290x10^2) grams of C2D The atomic weight of A is 15.0 grams/mol The atomic weight of B is 50.0 grams/mol The atomic weight of C is 35.0 grams/mol The atomic weight of D is 120.0 grams/mol Avogadro's number is (6.0220x10^23) Note: Your answer is assumed to be reduced to the highest power possible. | back 5 1.227 x 1024 WRONG |
front 6 Use the following balanced chemical equation 3 NaHCO3 + H3PO4 ----> 3 CO2 + 3 H2O +Na3PO4 (OR "3" N a HC O3 + H3PO4 right arrow 3 CO2 + 3 H2O + N a3PO4 How many grams of CO2 can you produce form 3.75 mole of NaHCO3? Note: More information may be given than what is required. The molecular weight of CO2 is 44.01 g/mol The molecular weight of NaHCO3 is 84.01 g/mol Do not type units with your answer | back 6 165 |
front 7 Consider the following hypothetical equation. 2 AB3 + 3 C2D --> A2D3 + 6 CB OR 2 A B3 + 3 C2 D right arrow A2 D3 + 6 C B The atomic weight of A is 25.0 g/mol The atomic weight of B is 50.0 g/mol The atomic weight of C is 30.0 g/mol The atomic weight of D is 15.0 g/mol Calculate the theoretical yield in grams of A2D3 produced from the reaction of 19.43 grams of AB3 and 18.18 grams of C2D. Do not type units with your answer. | back 7 5.274 |
front 8 Consider the following hypothetical equation. 2 AB3 + 3 C2D --> A2D3 + 6 CB OR 2 A B3 + 3 C2 D right arrow A2 D3 + 6 C B The atomic weight of A is 25.0 g/mol The atomic weight of B is 50.0 g/mol The atomic weight of C is 30.0 g/mol The atomic weight of D is 15.0 g/mol Calculate the theoretical yield in grams of A2D3 produced from the reaction of 48.23 grams of AB3 and 15.99 grams of C2D. Do not type units with your answer. | back 8 6.75 |
front 9 Consider the following hypothetical equation. 2 AB + 1 CD --> A2D + CB2 OR 2 AB + CD right arrow A2D + CB2 The atomic weight of A is 25.0 g/mol The atomic weight of B is 50.0 g/mol The atomic weight of C is 30.0 g/mol The atomic weight of D is 15.0 g/mol Calculate the theoretical yield in grams of A2D produced from the reaction of 238.52 grams of AB and 22.23 grams of CD. Do not type units with your answer. | back 9 32.1 |
front 10 Consider the following hypothetical equation. 2 AB3 + 3 C2D --> A2D3 + 6 CB OR 2 A B3 + 3 C2 D right arrow A2 D3 + 6 C B The atomic weight of A is 25.0 g/mol The atomic weight of B is 50.0 g/mol The atomic weight of C is 30.0 g/mol The atomic weight of D is 15.0 g/mol Calculate the percent yield of A2D3 if 4.20 grams are produced from the reaction of 26.01 grams of AB3 and 35.93 grams of C2D. Do not type units with your answer. | back 10 7.06 WRONG |