The answer is
D) an ice cube
<span>If I were a scientist examining the DNA sequence of two unknown organisms that I hypothesize share a common ancestor, I would expect to find similar or almost identical DNA sequence between the two organisms.
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Answer:
3) H-O
Explanation:
because oxygen and hydrogen have very high difference in electronegativity
Answer:
Because the enthalpy change of the reaction depends on the states of matter of the substances, they must be shown for each substance in the equation.
Explanation:
The enthalpy of a substance depends on the particular state of matter in which it occurs.
Therefore, in a thermo chemical equation, all the states of matters for all the chemical species in the equation must be accurately written so that the thermo chemical equation can be meaningful.
Answer:
E= h*frequency
6.626*10^-34)*5.71*10^14)= 3.78*10^-19 J