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1. The combustion of ammonia in the presence of excess oxygenyields NO2(g) and H2O(g):4NH3(g) + 7O2(g) → 4NO2(g) + 6H2O(g)The combustion of 43.9 mg of ammonia produces how many grams ofNO2(g)?A. 178B. 0.119C. 43.9D. 0.954E. 2.582. Calcium carbide, CaC2(s), reacts with water to produceacetylene, C2H2(g): CaC2(s) + 2H2O(g) → Ca(OH)2(s) + C2H2(g)Production of 13 g of C2H2(g) requires consumption of how manygrams of H2O(g)?A. 18B. 0.048C. 9.0D. 480E. 4.53. How many moles of oxygen, O2, are needed for the completecombustion of 5.00 g of octane (C8H18)?A. 0.111 moleB. 1.10 moleC. 0.547 moleD. 0.333 moleE. 2.20 mole4. When aqueous solutions of Fe2(SO4)3(aq) and Pb(NO3)2(aq) aremixed, an insoluble salt forms. Which of the following representsthe correct net ionic equation that describes this reaction?A. Fe3+(aq) + 3NO3-(aq) → Fe(NO3)3(s)B. Fe3+(aq) + SO42-(aq) + Pb2+(aq) + 3NO3-(aq) → Fe(NO3)3(s) +PbSO4(s)C. 2Fe3+(aq) + 3SO42-(aq) + 3Pb2+(aq) + 6NO3-(aq) →2Fe(NO3)3(s) + 3Pb2+(aq) + 3SO42-(aq)D. Pb2+(aq) + 2NO3-(aq) → Pb(NO3)2(s)E. Pb2+(aq) + SO42-(aq) → PbSO4(s)5. The fermentation of glucose, C6H12O6, produces ethyl alcohol,C2H5OH, and carbon dioxide. How many grams of glucose are needed toform 7.50 g of ethanol?A. 44.0 gB. 58.7 gC. 29.3 gD. 11.2 gE. 14.7 g
Explain why bromination of cyclohexene produce trans 1,2-dibromocyclohexane
Initially a container contains 0.75 M HBr and no product. What is the equilibrium concentration of HBr if the equilibrium concentration of H2 is 0.14 M
Would a solution that has a molarity of 0.990 M KNO3 and a density of 0.988 g/mL be considered unsaturated, saturated, or supersaturated?
Calculate the hydrogen ion concentration for an aqueous solution that has a pH of 3.45.
Draw all stereoisomers having molecular formula C6H12 that contain one double bond and give the IUPAC name for each compound
A reverse osmosis unit is used to obtain drinkable water from a source that contains 0.570 g NaCl per liter. What is the minimum pressure (in torr) that must be applied across the semipermeable membrane to obtain water
Calculate the pH after the addition of 0.00mL, 20.00mL, 24.00mL, 25.00mL, 26.00mL, 35.00mL, 44.00mL, 45.00mL, 46.00mL and 50.00mL of 0.200 M HClO4.
The correct sequence steps that will result in the synthesis of 1,2-dichloropropane using acetylene and any alkyl halides as starting materials is
a) [H3O] b) pH c) the balanced equation when reacted with LiOH d) millimeters of HBr solution required to neutralize 36.0 mL of a 0.250 M LiOH solution please explain
acalculate the equilibrium constant for the following reaction at ph7.0 and 25 degc using the indicated
Sulfur and fluorine react in a combination reaction to produce sulfur hexafluoride: The maximum amount of SF6 that can be produced from the reaction of 3.5 g of sulfur with 4.5 g of fluorine is
Pure alpha-D-glucose has a specific rotation=+112.2 degrees and pure beta-D-glucose has a specific rotation=+18.7 degrees. What is the composition of a sample of a mixed alpha and beta-D-glucose that has a specific rotation=+83.0 degrees?
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