Write the dissociation equation for aluminum nitrite. Al(NO2)3(aq) ⟶Al(aq) + 3NO2(aq) AlNO2(aq) ⟶Al(aq) + NO2(aq) Al(NO2)3(aq) ⟶Al+3(aq) + 3NO2-1(aq) Al(NO2)3(aq) ⟶Al(aq) + NO(aq) AlNO2(aq) ⟶Al+3(aq) + NO2-1(aq)
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- What are the coefficients for the reaction below after it is balanced? ____SO32-(aq)+ ____MnO4-(aq)+ ____H+(aq)→ ____SO42-(aq)+ ____Mn2+(aq)+ ____H2O(l) 5, 2, 6, 5, 2, 3 1, 1, 10, 1, 1, 5 2, 1, 12, 2, 1, 6 1, 2, 14, 1, 2, 7Balance the following net ionic equation (there is one mole of (NH4)3PO4●12MoO3 in the balanced equation- do NOT change this coefficient): HPO42-(aq) + NH4+(aq) + MoO42-(aq) + H+(aq)(NH4)3PO4●12MoO3(s) + H2O (l)Manganese oxide can be reduced to elemental manganese in the presence of methane (CH4). The products of the reaction are manganese metal, CO2, and water vapor. Practice only reporting the correct significant figures in all answers! a. Write a balanced reaction for the reduction of manganese (IV) oxide with methane to elemental manganese. b. Write a balanced reaction for the reduction of manganese (II) oxide with methane to elemental manganese. c. What is the mass percent of manganese in manganese (IV) oxide? d. What is the mass percent of manganese in manganese (II) oxide? e. A mixture of manganese (IV) oxide and manganese (II) oxide is reduced in the presence of methane. After ten different trials utilizing different masses of unknown mixture, the data was plotted (mass of mixture versus mass of manganese produced) a slope of 0.6854 was obtained. What is the mass percentage of manganese (IV) oxide and manganese (II) oxide in the mixture?
- A chemist wants to extract copper metal from copper chloride solution. The chemist places 0.25 grams of aluminum foil in a solution of 0.40 grams of copper (II) chloride. A single replacement reaction takes place. What are the likely observations when the reaction stops?Unbalanced equation: CuCl2 + Al → AlCl3 + Cu About 0.90 grams of copper is formed, and some aluminum is left in the reaction mixture. About 0.20 grams of copper is formed, and some aluminum is left in the reaction mixture. About 0.90 grams of copper is formed, and some copper chloride is left in the reaction mixture. About 0.20 grams of copper is formed, and some copper chloride is left in the reaction mixture.1. Balance the following chemical equation: Fe2O3 + CO ------> Fe + CO2, answers are listed in order - 1st coefficient, 2nd coeficient, etc. and so on. (1st one is in front of Fe2O3, 2nd one in front of CO, etc. and so on) Group of answer choices a) 1,3,3,2 b) 2,3,2,3 c) 1,3,2,3 d) 1,2,2,2Chemical Reaction Coefficients Al(s) + HCl(aq) → AlCl3(aq) + H2(g) Answer Chemical Reaction Coefficients Al(s) + Pb(NO3)2(aq) → Pb(s) + Al(NO3)3(aq) Answer
- 1. There is 0.25 mole of CO2 in a bottle of soda. How many grams of CO2 are in the bottle? 2. What coefficients (in order from left to right) are needed to balance the following chemical equation? ___C6H12O6(aq) → ___C2H6O(aq) + ___CO2(g) (In the answer choices below, a coefficient of 1 implies no coefficient in front of the formula.) Group of answer choices 1, 2, 2 1, 2, 3 2, 2, 3 1, 1, 12. Balance the following equation: BaSO4 + NiCl4 ------> BaCl2 + Ni(SO4)2 answers are listed in order - 1st coefficient, 2nd coeficient, etc. and so on. Group of answer choices a) 1,1,1,1 b) 2,1,2,1 c) 2,2,2,2 d) 1,2,1,2The coefficients when the equation below is balanced are: ____BiO3-(aq)+ ____Mn2+(aq)+ _____H+(aq)→ ____MnO4+(aq)+ ____Bi3+(aq)+ ____H2O(l) 2, 1, 4, 1, 2, 2 1, 1, 2, 1, 1, 1 1, 1, 6, 1, 1, 3 5, 2, 14, 2, 5, 7
- 1. If the animal population decreased, the amount of atmospheric carbon would: A-increase B-decrease C-stay the same 2.Which of the following would help the most to fight the current processes that are shifting Earth's climate? A-reduction of atmospheric oxygen B-increase in atmospheric nitrogen C-reduction in atmospheric carbon D-increase in atmospheric carbon 3.Which of these processes produces carbon dioxide? A-photosynthesis B-burning of fossil fuels C-animal perspiration D-planting trees 4. What will be the most immediate effect if many trees are cleared by deforestation? A-Decreased use of atmospheric carbon dioxide B-Increased rates of decomposition C-Increased production of organic compounds D-Decreased combustion of fossil fuels 5. Only humans can remove carbon from this carbon sink/reservoir. A-fossil fuels B-plants C-atmosphere D-animals 6. When humans…What are the coefficients for the following reactions when it is properly balanced? __ O2 + __ CH4 → __ CO2 + __ H2O Select one: a. 1, 3, 2, 1 b. 2, 1, 3 ,1 c. 2, 1, 1, 2 d. 2, 3, 2, 2Choose the reaction that illustrates H°f for Ca(NO3)2. Question 10 options: Ca(s) + N2(g) + 3O2(g) Ca(NO3)2(s) Ca2+(aq) + 2 NO3-(aq) Ca(NO3)2(aq) Ca(s) + 2 N(g) + 6 O(g) Ca(NO3)2(s) Ca(NO3)2(aq) Ca2+(aq) + 2 NO3-(aq) Ca(NO3)2(s) Ca(s) + N2(g) + 3O2(g)