definition of a kilocalorie?

Question

9) Which of the following is a correct definition of a kilocalorie?
A) the amount of heat required to raise the temperature of 1 g of water by 1°F
B) the amount of heat required to raise the temperature of 1 g of water by 1°C
C) the amount of heat required to raise the temperature of 1 kg of water by 1°F
D) the amount of heat required to raise the temperature of 1 kg of water by 1°C
E) the amount of heat required to raise the temperature of 1,000 g of water by 1°F

i have no idea i am terrible at these things help pls

Answer 1

D)

Answer 2

The answer is D. Each calorie has the ability to raise a gram of water 1 degree Celsius (the definition of a calorie). Therefore, a kilocalorie (1000 calories) can do the same to a kilogram (100 grams) of water.

D

Answer 3

gintable is correct, the specific heat of water (or anything) is not constant, it changes slightly with temperature. So the definition picks a temperature point. In fact, a pressure should also be specified as that could change the numbers a tiny bit. In fact below is a table of SH of water versus temperature: 0ºC 4.2176 kJ/kgC 10ºC 4.1921 20ºC 4.1818 30ºC 4.1784 40ºC 4.1785 50ºC 4.1806 60ºC 4.1843 70ºC 4.1895 80ºC 4.1963 90ºC 4.205 100ºC 4.2159 .

Answer 4

The unit of heat equal to the amount of heat required to raise the temperature of 1 kilogram of water by 1°C at 1 atmosphere pressure. Also called kilocalorie, kilogram calorie, large calorie.

Which would make it (D)

Answer 5

Definitions for calorie fall into 3 classes:

* The small calorie or gram calorie approximates the energy needed to increase the temperature of 1 gram of water by 1 °C. This is about 4.184 joules.
* The large calorie or kilogram calorie approximates the energy needed to increase the temperature of 1 kg of water by 1 °C. This is about 4.184 kJ, and exactly 1000 small calories.
* The mega calorie or ton calorie[citation needed] approximates the energy needed to increase the temperature of 1 tonne of water by 1 °C. This is about 4.184 MJ, and exactly 1000 large calories.
So D.

Answer 6

kilocalorie—larger unit of energy—a unit of energy equal to the heat required to raise the temperature of 1 kg of pure water by 1º C. It is also called large calorie.

Answer 7

it's the amount of heat needed to raise the temperature of 1000g of water by 1ºC or D.