Answer:2,3 -dimethyl-2-butenr
Explanation:
Answer:
D
Explanation:
I think but it is an better attempt than the other guy answer.
If you think of it endothermic is when there is energy needed for the reaction to occur and exothermic is when the reaction releases energy
<span>Relative abundance - comparison between the isotopes Percent abundance -
</span><span>comparing the totals.
</span>relative abundance:the number of organisms of a particular kind as a percentage of the total number of organisms of a given area or community; the number of birds of a particular species as a percentage of the total bird population of a given area percent:figured or expressed on the basis of a rate or proportion per hundred (used in combination with a number in expressing rates of interest, <span>proportions, etc.</span><span>
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