0
The initial temperature of 0.8 kg of ice was -5 Celsius. How much energy is needed to cause the ice to start to melt?
Wiki User
∙ 7y ago
specific heat of ice = 2.09 J/g/degree
2.09 J/g/deg x 800 g x 5 deg = 8360 J = 8.4 kJ
∆Hfusion = 334 J/g
0.8kg x 334 J/g x 1000 g/kg x 1 kJ/1000 J = 267 kJ
8.4 kJ + 267 kJ = 275.4 kJ
Wiki User
∙ 7y ago
Add your answer:
Earn +20 pts
How much energy is needed to raise the temperature of air by 1 degree Celsius?
.02 btu
How many joules of energy are needed to heat steam from 100 celsius to 114 celsius?
Approx 2940 Joules.
How much energy is needed to reduce water temperature from 15 degrees to 14 degrees?
1 calorie increases 1 gram of water by 1 degree celsius. 4.18 Joules are needed to increase the temperature of 1 gram of water by 1 degree celsius. To reduce the 1 gram of water 1 degree celsius it would have to give off 1 calorie of energy. To calculate the energy multiply the mass in grams of water by 4.18 and by the change in temperature. The energy = 4.18 x m x change in T. The answer is in Joules. If you are using calorie as the unit of energy, replace 4.18 J by 1 C. Note that food is measured in kilocalories (Calories) not metric calories.
A substance that has a specific heat that is higher than liquid water and explain what it means?
that means more energy is needed to raise the temperature of 1kg of liquid from 1 Celsius than water.
What is specific heat capacity equation?
Quantity of Energy= mass x temperature change x specific heat capacity For example: Find the amount of energy needed to raise the temperature of 0.20 kg of lead by 15 degree Celsius if the specific heat capacity of lead is 0.90 J/g degree Celsius. Answer: J=200g x 15 degree Celsius x 0.90 J/g degree Celsius = 2700 J
A calorie is the amount of energy needed to?
raise the temperature of the body by 1 Celsius
How much energy is needed to raise the temperature of air by 1 degree Celsius?
.02 btu
What is a calorine?
A calorine is the amount of energy needed to raise the temperature of 1gram of water 1 degree celsius.
What is the amount of energy needed to raise the temperature of 1kg of water by 1 degree Celsius?
phase change
How much energy is needed to raise the temperature of 2.0 grams of water of 5.0 Celsius?
42 J
How much heat energy is needed to raise the temperature of a 055kg sample of aluminum from 22.4 degrees celsius to 94.6 degrees celsius?
mmmm enthalpy
How much energy is needed to raise the temperature 2.0 g of water 5 at degrees Celsius?
42 J
How much thermal energy is needed to raise the temperature of 10.0 g of water 15.0 degrees Celsius?
Heat of vaporization of water is 40.7 kJ/mol so convert grams of water to moles of water and then convert moles of water to kJ of energy using the above fact. 10g H2O * (1mol/1.008*2+16)=mol H20
Define Joule calorie and Kcal?
A calorie is the amount of energy that needed to raise the temperature of one gram of water one degree Celsius. The Joule is the SI unit for energy.
What is the amount of energy needed to raise the temperature of 1 gram of water 1 degree celsius?
The amount of heat necessary to raise 1 gram of a substance by 1 degree Celsius is known as?
Where does the initial energy needed for photosynthesis come from?
sunlight.
What temperature is needed to sterilize soil?
65 Celsius for 4 weeks
