Thermochemistry
a year ago
bernard_taylor_894060
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21 QuestionsShow answers- Question 160 secondsReport an issueQ. Is the combustion of gasoline endothermic or exothermic?answer choices
- Question 260 secondsReport an issueQ. What is the symbol for heat?answer choices
- Question 3120 secondsReport an issueQ.
What are chemical reactions that absorb energy?
answer choices - Question 4120 secondsReport an issueQ.
What is the study of heat changes that accompany chemical reactions and phase changes?
answer choices - Question 560 secondsReport an issueQ.
What is the formula for calculating heat?
answer choices - Question 6300 secondsReport an issueQ.
Convert 42 kJ into joules
answer choices - Question 745 secondsReport an issueQ.
What are the two main types of energy?
answer choices - Question 8180 secondsReport an issueQ.
Consider the reaction: 2 H2O + energy --> 2H2 + O2
answer choices - Question 9120 secondsReport an issueQ. The heat required to raise the temperature of a SUBSTANCE by 1∘Canswer choices
- Question 10120 secondsReport an issueQ. The heat required to raise the temperature of WATER 1∘Canswer choices
- Question 11120 secondsReport an issueQ. Heat flows from _______ to ______ objectsanswer choices
- Question 12300 secondsReport an issueQ.
A 500g piece of aluminum has a temperature of 7°C. What is the heat energy produced? Specific heat of Aluminum is 0.900 J/gºC.
answer choices - Question 1360 secondsReport an issueQ.
What does temperature measure?
answer choices - Question 14300 secondsReport an issueQ.
How much heat does an aluminum block absorb if 10.00 grams is heated from 25.0oC to 50.0oC? *Specific heat of aluminum is 0.900 J/goC
answer choices - Question 15120 secondsReport an issueQ. Durning a phase change the temperature of a substance_________.answer choices
- Question 16300 secondsReport an issueQ.
A 24.0 gram sample of copper was heated from 25.0oC to 500.0oC, 4378 J of heat were absorbed, what is the specific heat of copper?
answer choices - Question 17300 secondsReport an issueQ.
The specific heat of platinum is 0.133 J/g°C. How much heat is released when a 10 g piece of platinum cools from 100°C to 50°C?
answer choices - Question 18300 secondsReport an issueQ.
The temperature of an unknown piece of metal with a mass of 30.00 g changes from 25.0°C to 35.0°C when the metal absorbs 350.0 J of energy. What is the specific heat of the metal?
answer choices - Question 1960 secondsReport an issueQ.
Releasing heat into the surroundings occurs during an ___________________ reaction.
answer choices - Question 20300 secondsReport an issueQ.
A sample of iron receives 50 J of heat energy that raises the temperature of the iron 25.0°C. If iron has a specific heat of 0.10 J/g°C, what is the mass of the iron sample?
answer choices - Question 21300 secondsReport an issueQ.
If 238 J of heat is absorbed by a sample of metal with a mass of 40.7 g, and it raises the temperature from 20.0°C to 32.4°C, what is the specific heat capacity of the metal?
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