Question

When a calorimeter is used, no heat is exchanged between the contents of the container and the outside air. If an endothermic reaction is conducted inside a calorimeter filled with water, which of the following statements is not correct regarding the reaction?

Answer 1

Where are the statements? :/

Answer 2

The total energy inside the calorimeter will increase.
The thermometer will show a decrease in temperature.
The water decreases in temperature as the reaction absorbs heat.
The potential energy of the products is higher than that of the reactants.

Answer 3

@seiga

Answer 4

The thermometer will show a decrease in temperature.,

Answer 5

A 20 gram piece of metal is added to a sample of 100 grams of water inside a calorimeter. If the metal is at a temperature of 125° Celsius and the water is at 20° Celsius, which of the following best describes what will occur inside the calorimeter?
The final temperature of the water will be 105° Celsius.
The energy lost by the metal equals the energy gained by the water.
The final temperature of the water will be lower than the initial temperature.
The temperature gained by the water will equal the temperature lost by the metal.

Answer 6

i chose B?

Answer 7

..The answer is whichever option is closest to this:
The heat energy from the metal is transferred to the water. After the transfer is complete, an equilibrium temperature is reached. The water will be warmer, and the metal will be cooler than originally.

If you need to calculate the final temp:
(mass of water)(specific heat of water)(temp change of water)=(mass of metal)(specific heat of metal)(temp change of metal).

Answer 8

so do u think B is right because thats what i got because the water is warmer so it gained energy and the metal cooled right?

Answer 9

yeah it is B.(:

Answer 10

awesome :P

Answer 11

hey thanks for your help i think im good now :) u rule @seiga

Answer 12

ahha im sure i don't.and np.

Answer 13

hahaha @seiga got them all :)