When a sample of aqueous hydrochloric acid was neutralized with aqueous sodium hydroxide in a calorimeter, the temperature of 100.0 g of water surrounding the reaction increased from 25.0°C to 31.5°C. If the specific heat of water is 1.00 cal/(g•°C), calculate the quantity of energy in calories involved in this neutralization reaction.

Unstable nuclei become more stable by spontaneously undergoing a change in their nucleus and emitting radiation. What is the term used to describe this process?

Which of the following measures of radioactivity takes into account the relative biological effect (RBE) of the radiation involved?

What is the conjugate base of H 2SO 4?

What instrument is used for measuring the heat energy absorbed or released in a chemical reaction?

When a cold-pack is activated, a chemical reaction occurs and the temperature of the pack contents drops sharply. Which of the following is a correct description of the reaction occurring in the pack?

One effect of a catalyst being added to a reaction mixture is

One mole of sodium chloride is added to 100 mL of water in beaker A. One mole of glucose, C6H12O6, is added to 100 mL of water in beaker B. How much more will the freezing point of water be lowered in beaker A than in beaker B?

Which of the following statements concerning a voltaic cell is FALSE?

A solution containing a buffer has an initial pH of 8.78. If a student adds 5 drops of HCl( aq) to this solution, what would be a reasonable pH for the resulting solution?