The boiling point of oxygen is higher than nitrogen's boiling
The reason the boiling point of O2 is higher is not because of increased van der Waals interactions, but simple physics. The mass of a molecule of O2 is greater than that of a molecule of N2, so the molecule of O2 traveling at a speed sufficient to break out of the liquid phase has a greater kinetic energy than an analogous N2 molecule.
The net effect is that more energy must be distributed throughout a sample of O2 to achieve a given vapor pressure (in this case equal to atmospheric pressure) than for a sample of N2. More energy means greater temperature.
Answer:
Explanation:
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In this case, since the undergoing chemical reaction is:
We first need to identify the limiting reactant given the masses of nitrogen and hydrogen:
It means that only 0.647 moles of ammonia are yielded, so the resulting enthalpy change is:
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Answer:
C.) Chromosomes
Explanation:
Nucleotides are made up of three parts: a deoxyribose sugar, a phosphate, and a nitrogen base.
Chromosomes are long, condensed strands of DNA.
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Answer:
Explanation:
-a tendency to do nothing or to remain unchanged
-a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
