Diffusion<span> is defined as spreading of molecules of a substance, away from each other, throughout the space.
</span>
Effusion is the phenomena of escape of gas molecules through a very small orifice into an evacuated area.
According to Graham's Law, rate of diffusion and effusion is inversely proportional to molecular mass.
Thus, with increase in molecular mass, rate of diffusion and effusion will decrease.
The Mitocondria is the powerhouse of the cells in plants
Answer: The ocean is made mostly of: D) Hydrogen and oxygen.
Explanation: The most abundant elements in the ocean by proportion of mass in percent are oxygen (85.84%), hydrogen (10.82%), chlorine (1.94%), sodium (1.08%), magnesium (0.13%), sulfur (0.09%), calcium (0.04%), potassium (0.04%), bromine (0.007%), carbon (0.003%), and boron (0.0004%).
Hope this helped!
Answer:
O2 has a double covalent bond
H2 has a single covalent bond
N2 has a triple covalent bond
Explanation:
Hydrogen atoms form only one covalent bond because they have only one valence electron to pair.
Since two electrons form each bond, there are a total of two pairs, or four electrons, in the bond.
The N2 Lewis structure has a triple bond between two nitrogen atoms. According to the octet rule, nitrogen atoms need to bond three times.