How much energy is required to heat 100g of water?
Table of Contents
- 1 How much energy is required to heat 100g of water?
- 2 How many joules of heat are absorbed to raise the temperature of 435 grams of water at 1 atm from 25 C to its boiling point 100 C?
- 3 How many joules of heat energy are released when 50 grams of water are cooled from 70 ºC to 60 ºC?
- 4 How much heat must be added to raise the temperature of 100 gms of water from 50c to 950 C?
- 5 What is the formula for heat capacity of a sample?
- 6 How many joules of heat does Mercury absorb when heated?
How much energy is required to heat 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.
How many joules of heat are absorbed to raise the temperature of 435 grams of water at 1 atm from 25 C to its boiling point 100 C?
Highlight to reveal answers and explanations
| Questions | Answer | Explanations |
|---|---|---|
| 40 How many joules of heat are absorbed to raise the temperature of 435 grams of water at 1 atm from 25°C to its boiling point, 100.°C? (1) 4.5 X 104 J (3) 2.5 x 107 J (2) 1.4 x 105 J (4) 7.4 x 107 J | 2 | Q=m Hv= 435g x 2260J/g= 2,500,000J 2.5 x 107 J |
What is the heat capacity of 200g of water?
In water’s case, you know that its specific heat is equal to 4.18Jg∘C .
How many grams of water would require 22000 joules of heat to raise its temperature from 34.0 C to 100.0 C the specific heat of water is 4.18j g C?
Approximately 8.0g of water.
How many joules of heat energy are released when 50 grams of water are cooled from 70 ºC to 60 ºC?
2000 J of heat energy are released.
How much heat must be added to raise the temperature of 100 gms of water from 50c to 950 C?
In water’s case, you need to provide 4.18 J of heat per gram of water to increase its temperature by 1∘C .
How much energy is released when a sample cools?
A sample of an unknown metal has a mass of 120.7 g. As the sample cools from 90.5 °C to 25.7 °C, it releases 7020 J of energy. What is the specific heat of the sample?
How much energy does it take to heat water?
it takes the same amount of energy to heat water from 48 degrees to 52 degrees as it takes to heat water from 58 degrees to 62. But when the state of water changes from solid to fluid (e.g. -2°C to + 2°C) or from fluid to gas (e.g. 98°C to 102°C) this does not hold true any more.
What is the formula for heat capacity of a sample?
c = Q / (m * ΔT) Q is the amount of supplied or subtracted heat (in joules), m is the mass of the sample and ΔT is the difference between the initial and final temperature of the sample. Heat capacity is measured in J/(kg * K).
How many joules of heat does Mercury absorb when heated?
25.0 g of mercury is heated from 25°C to 155°C, and absorbs 455 joules of heat in the process. What is the specific heat capacity of mercury?