3.23.23 Heat

A beaker of water has 32 mL of water in it that has a mass of 32.1 g. The initial temperature of the water is 19℃. The water is heated to 49℃. Which equation correctly shows the heat gained by the water?

• 32.1 c x 30℃ x 1 cal/g℃

• 49℃ - 19℃

• 32 mL

• 49℃

A beaker of water has 32 mL of water in it that has a mass of 32.1 g. The initial temperature of the water is 19℃. The water is heated to 49℃. Which equation correctly shows the change in temperature of the water?

• 32.1 c x 30℃ x 1 cal/g℃

• 49℃ - 19℃

• 19℃ - 49℃

• 49℃

In the equation H = mΔT_pC_p, what does the "C_p" represent?

• mass in g

• heat gained or lost

• change in temperature in ℃

• specific heat in cal/g℃

In the equation H = mΔT_pC_p, what does the "H" represent?

• mass in g

• heat gained or lost

• change in temperature in ℃

• specific heat in cal/g℃

When finding heat gained or heat lost, we need to use which information? Select all that apply.

• initial temperature

• final temperature

• mass

• specific heat

• volume