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In an exothermic reaction the system gains energy in the form of heat
True
36.8 calories
potential energy stored in chemical bonds
acidic
-268.4 kJ
energy is transferred or conserved
concentration
False
Which of the following is not a type of energy?
True
36.8 calories
potential energy stored in chemical bonds
acidic
-268.4 kJ
energy is transferred or conserved
concentration
False
What is chemical energy?
True
36.8 calories
potential energy stored in chemical bonds
acidic
-268.4 kJ
energy is transferred or conserved
concentration
False
What happens to energy when things happen?
True
36.8 calories
potential energy stored in chemical bonds
acidic
-268.4 kJ
energy is transferred or conserved
concentration
False
Which of the following is not a way energy is transferred?
True
36.8 calories
potential energy stored in chemical bonds
acidic
-268.4 kJ
energy is transferred or conserved
concentration
False
A 20-gram piece of copper is dropped into a container of water. As it cools, the water changes from 40 °C to 60 °C. How much heat did the copper give off? (The specific heat capacity of copper is 0.092 cal/g°C).
True
36.8 calories
potential energy stored in chemical bonds
acidic
-268.4 kJ
energy is transferred or conserved
concentration
False
The change in temperature is a chemical property.
True
36.8 calories
potential energy stored in chemical bonds
acidic
-268.4 kJ
energy is transferred or conserved
concentration
False
Consider the following equation, how much energy would be released if 10.0g of C2H5OH were burned?C2H5OH + 3O2 2CO2 + 3H2O ∆H= -1234.7 kJ
True
36.8 calories
potential energy stored in chemical bonds
acidic
-268.4 kJ
energy is transferred or conserved
concentration
False
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