front 1 What is the sum of the coefficients of this reaction, after balancing? C8H16 + O2 ----> CO2 + H2O (OR C8H16 + O2 right arrow C O2 + H2O) | back 1 29 |
front 2 What is the sum of the coefficients of this reaction, after balancing? Al(OH)3 + H2SO4 -----> Al2(SO4)3 + H2O (OR A l(O H)3 + H2S O4 right arrow A l2(S O4)3 + H2O) | back 2 12 |
front 3 What is the sum of the coefficients of this reaction, after balancing? K + O2 ----> K2O (OR K + O2 right arrow K2O) | back 3 7 |
front 4 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 moles of Na3PO4 can you produce form 4.60 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 4 1.5 |
front 5 Use the following theoretical equation AB2 + 2 C --> 2 CB + A (OR A B2 + 2 C right arrow 2 C B + B) Calculate the number of molecules of CB formed from the reaction of (5.2000x10^1) grams of AB2 and (7.200x10^2) grams of C 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 Avogadro's number is (6.02200x10^23) Note: Your answer is assumed to be reduced to the highest power possible. | back 5 1.2 x 1025 WRONG |
front 6 Use the following chemical equation C6H12 + 9 O2 ----> 6 CO2 + 6 H2O (OR C6H12 + 9 O2 right arrow 6 CO2 + 6 H2O) How many grams of water can you produce from 1.400 moles of Oxygen gas? The molecular weight of water is 18.02 g/mol The molecular weight of CO2 is 44.01 g/mol The molecular weight of O2 is 32.00 g/mol 1 mole of a gas at STP is 22.414 L Do not type units with your answer | back 6 16.82 |
front 7 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 50.19 grams of AB and 34.39 grams of CD. Do not type units with your answer. | back 7 21.8 |
front 8 Consider the following hypothetical equation. A2B3 + 3 C2D --> A2D3 + 3 C2B OR A2 B3 + 3 C2 D right arrow A2 D3 + 3 C2 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 C2B produced from the reaction of 26.45 grams of A2B3 and 19.35 grams of C2D. Do not type units with your answer. | back 8 28.4 |
front 9 Consider the following hypothetical equation. A2B3 + 3 C2D --> A2D3 + 3 C2B OR A2 B3 + 3 C2 D right arrow A2 D3 + 3 C2 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 C2B produced from the reaction of 34.19 grams of A2B3 and 54.13 grams of C2D. Do not type units with your answer. | back 9 56.41 |
front 10 Consider the following hypothetical equation. 3 A + 2 B --> A2B3 OR 3 A + 2 B right arrow A2B3 The atomic weight of A is 25.0 g/mol The atomic weight of B is 50.0 g/mol Calculate the percent yield of A2B3 if 20.0 grams of A2B3 is produced from the reaction of 21.0 grams of A and 56.0 grams of B. Do not type units with your answer. | back 10 35.7 |