The specific heat of water is 1 calorie/gram °C = 4.186 joule/gram °C which is higher than any other common substance. As a result, water plays a very important role in temperature regulation. The specific heat per gram for water is much higher than that for a metal, as described in the water-metal example.

## How many joules does it take to boil water?

In our kitchen, we need to get those 500 mL of water from room temperature (21C) to boiling (100C) by adding energy – 165,000 Joules (or 0.046 kilowatt hours), to be precise – in the form of heat.

## How many joules does it take to heat 1 gram of water?

Quantitative experiments show that 4.18 Joules of heat energy are required to raise the temperature of 1g of water by 1°C.

## How much energy does it take to boil 1 gram of water?

The heat of vaporization of water is about 2,260 kJ/kg The value is also equal to 2260 joules per gram. If you want to evaporate all of the one gram to vapor without waiting for a long time, you add energy to 20° C water until it boil then add 2260 joules per gram.

## How many joules are needed to evaporate 1g of boiling water?

For water at its normal boiling point of 100 ºC, the heat of vaporization is 2260 J g-1. This means that to convert 1 g of water at 100 ºC to 1 g of steam at 100 ºC, 2260 J of heat must be absorbed by the water.

## What type of energy is used to boil water?

1 Answer. Boiling water is an endothermic process, which supplies heat to the water molecules, increasing their potential energy. The applied heat causes the water molecules to move further away from each other without causing any increase in overall temperature.

## How many joules does it take to melt 1 gram of ice?

A total of 334 J of energy are required to melt 1 g of ice at 0°C, which is called the latent heat of melting. At 0°C, liquid water has 334 J g−1 more energy than ice at the same temperature.

## How do you calculate joules to heat water?

Example: If 10 kilograms of water are heated from 10 degrees Celsius to 50 degrees Celsius, how much energy (in joules) did they absorb? Answer: The specific heat capacity of water is (roughly) 4.184 kilojoules / kg K. (10 kg) × (40 degrees Celsius temperature change) × (4.184 kJ / kg K) = 1673.6 kilojoules.

## How long does it take to boil 1 cup of water?

Answer. Answer: For boiling 1 cup of water, it takes about 1 minute in a microwave, 2 minutes in an electric kettle, and 3 minutes in a pot on the stove.

## What is Q MC ∆ T used for?

Q=mcΔT Q = mc Δ T , where Q is the symbol for heat transfer, m is the mass of the substance, and ΔT is the change in temperature. The symbol c stands for specific heat and depends on the material and phase. The specific heat is the amount of heat necessary to change the temperature of 1.00 kg of mass by 1.00ºC.

## How much energy is required to boil 150g water?

Answer: 47,070 J are needed to increase the temperature of 150 g of water from 25 degrees C to its boiling point of 100 degrees C.

## Why does it take so much energy to boil water?

Explanation: In order to cause water to increase in temperature, the energy being put into the water first needs to break hydrogen bonds between the water molecules. Hydrogen bonding in water is significant, so it takes a significant amount of energy to overcome them.

## How do you calculate the energy needed to boil water?

1 Answer

- c = specific heat capacity of water, which is 1 cal/(g °C)
- m = mass of water; i.e. 1 kg.
- T = the room temperature in °C.
- Δhvap = specific enthalpy of vaporization of water; 540 cal/g.

## When a liquid is vaporized how much energy is gained?

Explanation: When Liquid is vaporized it gains energy by 20%.

## What is the amount of heat required to completely melt a 200?

The answer is (C) 6680 J .

## Which process requires water 2260 joules?

For water the heat of vaporization is 2260 Joules / gram at its normal boiling point .