Smart book Energy

calorie joule

One blank is equal to 4.184 J, and one Calories is equal to 1

2.05 × 106 J × 1 cal/4.184 J × 1 Calorie/1000 cal = 490 Calories

A milkshake contains 2.05 × 106 J of energy. How many nutritional Calories are in the milkshake? Recall that 1 cal = 4.184 J and 1 Calorie = 1 kcal.

1.88

A sample of silver with a mass of 1.00 g increases in temperature from 20.00°C to 28.00°C. Given that silver has a specific heat of 0.235 J/(g⋅°C), the quantity of heat absorbed is

-418.4 J = 10.00 g × 4.184 J/(g⋅°C) × (20.0°C - 30.0°C)

A sample of water with a mass of 10.00 g cools from 30.00°C to 20.00°C. Given that the specific heat of liquid water is 4.184 J/(g⋅°C), how much heat is released by the water?

potential kinetic

Energy due to the composition of an object is blank energy, while energy if motion is blank energy.

potential kinetic

Energy exists in two basic forms: blank energy and blank energy.

385 Calories x 1000 cal/1 calorie x 4.184 J/1 cal = 1.61 x 10^6 J

Given that 1 Calorie = 1 kcal, and 1 cal = 4.184 J, what is the energy in joules contained in a lunch that has 385 nutritional Calories?

44.9 J = 10.0 g × 0.449 J/(g⋅°C) × 10.0°C

How much heat is absorbed by a 10.0 g sample of iron when its temperature increases by 10.0∘C? The specific heat of iron is 0.449 J/(g C).

conservation of energy

In any chemical reaction or physical process, energy may change from one form to another, but it is neither created nor destroyed, according to the law of

Joule

The SI unit of energy and heat, which is equivalent to 0.2390 calories, is the

energy

The ability to do work or produce heat is

calorie

The amount of energy required to raise the temperature of one gram of pure water by one degree Celsius is defined as a(n)

chemical potential energy

The energy that is stored in a substance because of its composition is called

specific mass temperature

The quantity of heat absorbed or released by a substance is equal to the product of its heat, the of the substance, and the change in its

raise the temperature of one gram of the substance by one degree Celsius

The specific heat of a substance is the amount of heat required to

heat

Thermal energy that is in the process of flowing from a warmer object to a cooler object is and is represented by q.

specific heat

Water can be used to harness the energy of the Sun by absorbing solar radiation and then circulating it through homes and businesses. Water is well suited to this use because of its high

25.8

When a 20.00-g sample of lead, with a specific heat of 0.129 J/(g⋅°C), cools from 40.00°C to 30.00°C, the quantity of heat that is released is

1 cal = 4.184 J 1 J = 0.2390 cal

Which equations correctly represent the relationships among energy units?

q = m × c × ΔT

Which is the correct expression of the equation for calculating heat?

Chemical systems contain both kinetic energy and potential energy. The kinetic energy of a substance is proportional to temperature. The potential energy of a substance depends on its composition.

Which statements about kinetic and potential energy are correct?