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

The specific heat capacity is in the equation. If it takes 1 min to boil the water, it will take **1600 watt hours** or 1.6 kilo watt hours.

## How much energy does it take to boil 100g of water?

How much energy does it take to boil 100g of water? To convert 100.0 g of water at 20.0 °C to steam at 100.0 °C requires **259.5 kJ of** energy.

## Is it cheaper to boil water with gas or electric?

Because **gas is cheaper than electricity**, it works out slightly cheaper to boil water on a gas hob than using an electric kettle, as long as you are boiling just the quantity you need and switch off the hob as soon as it has boiled.

## What is the most economical 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 much energy is required to boil 150g water?

= 150 g x 4.184 J/g/K x (373 – 298) K = **47,070 J**. Thus, 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. One can follow a similar procedure to determine the energy needed to heat water from one temperature to another.

## Why is energy needed to boil water?

Boiling water is an endothermic process, which supplies **heat to the water molecules**, increasing their potential energy. … Once the intermolecular bonds are broken, any extra heat increases the kinetic energy of the system and the molecules of the water vapor move faster as the temperature increases.

## What is the most efficient way to heat 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 should it take a gas stove to boil water?

So, How long does it take for water to boil? 1 liter of ordinary tap water will boil after **6-8 minutes** at a gas stove and from 9 to 12 minutes at the electric stove. If the water is pure, it will be 6 minutes at a gas cooker and 8 minutes at an electric stove.

## Does it take longer to boil water on a gas stove?

Boiling speed.

In comparison tests, **gas stoves are almost always slower to boil a pot of water** than an electric stove with the same BTU rating. This is probably because a lot more heat escapes with gas (see below).