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## How many kw 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 long does it take to boil 1 Litre of water in a kettle?

How long does it take to boil? Some kettles take almost **four minutes** to boil a litre of water, while the best out there will do the job for you in around two-and-a-quarter minutes.

## 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.

## How many kilowatts does it take to boil a gallon of water?

Cost To Heat Water Using Electricity

One BTU is 0.000293 kWh. It will take **0.195 kWh** to heat a gallon of water, or 0.195 x 1000 = 195 kWh to heat 1000 gallons.

## What is the most efficient way to boil water?

For appliances – **microwave**, electric tea kettle, electric stovetop – the most efficient appliance is the one that can boil water while pulling in the least amount of electricity via its plug.

## How long does it take to boil 500ml of water?

I did an experiment where I boiled two cups (500ml) of water in a kettle, and it took **1:30 minutes** to reach around 98 C, average.

## How much time should we boil water?

CDC recommends making water microbiologically safe to drink by bringing it to a rolling boil for **one (1) minute**.

## What happens to the temperature of water while it is boiling?

When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles. … Therefore the **temperature of the liquid remains constant during boiling**. For example, water will remain at 100ºC while boiling.