Which of these is true of a chemical reaction? (a) The total number of atoms does not change, so mass is conserved in the reaction. (b) Even if the total number of atoms changes, mass may not be conserved in the reaction. (c) Even if the total number of does not change, mass may not be conserved in the reaction. (d) The total number of atoms changes, so mass is conserved in the reaction.

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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b.false that your answer

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.