Solve] Time to Boil 1.1 kg Water with 1500 W

In summary, the time it takes to boil 1.1 kg of water with a 1500 W heater is approximately 7-8 minutes. Using a different wattage heater will affect the boiling time, with a higher wattage heater boiling the water faster. The starting temperature of the water also plays a significant role, with higher starting temperatures resulting in shorter boiling times. However, the given equation is specific to boiling 1.1 kg of water with a 1500 W heater and cannot be used for different amounts of water. When boiling water with a 1500 W heater, it is important to take safety precautions such as using suitable pots or containers, handling hot water carefully, and never leaving the boiling water unattended.
  • #1
k31453
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Homework Statement


A stove burner supplies heat to a pan at the rate of 1500 W. How
long will it take to boil away 1.1 kg of water, once the water
reaches its boiling point?


Homework Equations


q = mct


The Attempt at a Solution



heat transfer = 1500 W, m = 1.1 KG Tf = 100
[
 
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  • #2
Look up latent "heat of water". That will allow you to calculate the amount of energy needed to turn 1.1kg of water at 100C into steam at 100C.

Then remember the equation that relates Power, Energy and Time.
 

1. How long will it take to boil 1.1 kg of water with a 1500 W heater?

The time it takes to boil water depends on several factors, including the power of the heater, the starting temperature of the water, and the surrounding environment. However, based on the given information, it would take approximately 7-8 minutes to boil 1.1 kg of water with a 1500 W heater.

2. Can I use a different wattage heater to boil the same amount of water?

Yes, you can use a different wattage heater to boil the same amount of water. However, the time it takes to boil the water will vary depending on the power of the heater. A higher wattage heater will boil the water faster, while a lower wattage heater will take longer.

3. How does the starting temperature of the water affect the boiling time?

The starting temperature of the water plays a significant role in the boiling time. The higher the starting temperature, the less time it will take for the water to boil. This is because the water will already be closer to its boiling point, so it will require less energy to reach the boiling point.

4. Can I use this equation to calculate the boiling time for different amounts of water?

No, this equation is specific to boiling 1.1 kg of water with a 1500 W heater. To calculate the boiling time for different amounts of water, you will need to use a different equation that takes into account the specific heat capacity and other factors of the water and the heater.

5. Are there any safety precautions I should take when boiling water with a 1500 W heater?

Yes, when using a 1500 W heater to boil water, there are a few safety precautions you should take. Make sure to use a pot or container that is suitable for use on a stove or with a heater. Also, be careful when handling hot water and use oven mitts or other protective gear. Finally, always monitor the boiling water and do not leave it unattended to prevent accidents.

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