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(08.04 LC) Which of the following ions is formed when a base is dissolved in a solution?

(07.02 MC) During an exothermic reaction, ΔH for the reactants was 890 kJ/mol. Which of the following statements is correct about the ΔH for the products?

(06.04 LC) Read the chemical equation.N2 + 3H2 → 2NH3Using the volume ratio, determine how many liters of NH3 is produced if 1.2 liters of H2 reacts with an excess of N2, if all measurements are taken at the same temperature and pressure?

(07.07 MC) Consider the following equilibrium reaction having gaseous reactants and products.4HCl + O2 ⇌ 2H2O + Cl2Which of the following would result from increasing the concentration of H2O?

(07.05 MC) When a cube of manganese oxide was added to a solution of hydrogen peroxide, water and oxygen were produced. Manganese oxide was not used up in the reaction. Which of the following is likely to decrease the rate of the reaction?

(08.02 MC) A 0.0300 M NaCl solution was formed when 42.0 grams of NaCl was dissolved in enough water. What was the total volume of the solution formed?

Completar. Fill in the blanks with the appropriate words. Two words will not be used. (4 x 1 pt. each = 4 pts.) —Alberto, ¿[1] es la clase de matemáticas?—Es a las 2 de la tarde. —¿[2] son tus clases favoritas?—Matemáticas y ciencias. —¿[3] viajan ustedes?—Viajamos a Puerto Rico. —¿[4] hay tres laboratorios?—Hay tres porque muchos estudiantes estudian química.

(06.03 LC) Which of the following most likely happens when the volume of a gas increases?

(06.04 HC) During a laboratory experiment, 44.18 grams of Al2O3 was formed when O2 reacted with aluminum metal at 290.0 K and 1.3 atm. What was the volume of O2 used during the experiment?3O2 + 4Al → 2Al2O3

(07.01 MC) A student made a sketch of a potential energy diagram to represent a reaction with a −ΔH value.Explain, using complete sentences, why the diagram made by the student is correct or incorrect. Be sure to also explain what the values of X and Y represent.