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(08.02 LC) What happens to the molarity of a salt solution if the number of moles of salt in the solution is multiplied by three and the number of liters of the solution is also multiplied by three?

Which drug is responsible for the most deaths in the United States on an annual basis?

(07.06 MC) During an experiment, ice and water were placed in a perfectly insulated thermos flask at 0 °C. Describe this system when it phase reaches equilibrium.

(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.