which statement illustrates the difference between a chemical reaction and a nuclear reaction?

a nuclear reaction releases more energy per gram and appears to violate the law of conservation of mass.
a nuclear reaction releases less energy per gram and appears to violate the law of conservation of mass.
a nuclear reaction releases more energy per gram but does not appear to violate the law of conservation of mass.
a nuclear reaction releases less energy per gram but does not appear to violate the law of conservation of mass.
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What is a metal replacement reaction

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes.which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature.sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent

What type of reaction fuels the processes seen here?