Which statement is false?
a. δerxn is a measure of heat.
b. enthalpy is the sum of a...
Which statement is false?
a. δerxn is a measure of heat.
b. enthalpy is the sum of a system's internal energy and the product of pressure and volume.
c. δhrxn is the heat of reaction.
d. an exothermic reaction gives heat off heat to the surroundings.
e. endothermic has a positive δh.
Answers: 2
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Aforce of 9.00 newtons acts at an angle of 19.0 to the horizontal. what is its component in the horizontal direction?
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Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates
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Sound travels slower in colder air that it does in warmer air. make a claim about the effect of air temperature on the speed of sound. support your claim with evidence
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