The temperature of a 95.4g piece of copper increases from 25.0 degrees Celcius to 48.0 degrees Celcius when the copper absorbs 849J of heat. What is the specific heat of copper?
What is 0.387 J/gxdegrees Celcius
100
A chemical reaction that producesand releases heat.
What is an exothermic process
100
These are the four phases of matter.
What is solid, liquid, gas, plasma?
100
The formula for Molar Heat of Fusion
What is q = n x ΔHfus
100
the SI unit of energy
What is a Joule (J)?
200
When 435 J of heat are added to 3.4g of olive oil at 21 degrees Celcius, the temperature increases to 85 degrees Celcius. What is the specific heat of the olive oil?
What is 2.0 J/gxdegrees Celcius
200
A chemical reaction that gains or absorbs heat.
What is an endothermic process?
200
An example of plasma is
What is fluorescent lights, neon signs, stars
200
The amount of energy needed to convert one mole of a substance between liquid and gas states.
What is Molar Heat of Vaporization
200
The quantity of heat needed to raise the temperature of 1g of pure water 1 degree Celcius.
What is a calorie?
300
What is the specific heat of ethanol if 150 Joules of heat are added to 25g at a temperature of 2.4 degrees Celcius?
What is 2.5 J/gxdegrees Celcius
300
In an endothermic process, heat is _____. (positive/negative)
What is positive?
300
The first phase on the heating curve is
What is solid?
300
The Molar Heat of fusion for water is 6.009 KJ/mol. This amount of energy must be removed from 12 moles of water at 0 degrees Celcius in order to convert it to ice at 0 degrees.
What is q = 72.11 KJ
300
1000 calories, or 1 kilocalorie, is equivalent to 1 of these
What is a (food) Calorie?
400
How much energy is required to convert 40.0 g of ice at a temperature of -15 degrees Celcius to steam at a temperature of 110 degrees Celcius?
What is 20,920 J
400
In an exothermic process, heat is ____. (positive/negative)
What is negative?
400
What phase change occurs during the Heat of Vaporization?
What is liquid to gas?
400
The molar heat of vaporization for water is 40.79 KJ/mol. This amount of energy must be absorbed by 30 moles of water at 100 degrees Celcius.
What is q = 1223.70 KJ
400
1J of heat raises the temperature of 1g of pure water to this temperature
What is .2390 degrees Celcius?
500
Iron has a specific heat of 0.45 J/g degrees Celcius. If 2500 calories of heat are added to 87 grams of iron, what will be the change in temperature of the ethanol (please put your answer in Joules)?
What is ΔT = 267.18 degrees Celcius?
500
Making ice is an example of this type of process.
What is an exothermic process?
500
The last phase on the heating curve
What is gas?
500
The molar heat of fusion for water is 6.009 KJ/mol. This many moles of water are needed to produce 120.18 KJ of energy in order to convert water to ice at 0 degrees Celcius.