The EPA sets national air-quality standards for common air pollutants. The
1 answer:
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Answer:
Explanation:
a) : This is a non polar covalent compound which are held by weak vanderwaal forces of attraction.
b) : This is a covalent compound which is polar due to the presence of lone pair of electrons and are held by dipole-dipole forces of attraction.
c) : These are joined by a special type of dipole dipole attraction called as hydrogen bond. It forms between electronegative nitrogen atom and hydrogen atom and is the strongest interaction.
d) : This is a covalent compound and is non polar which are held by weak vanderwaal forces of attraction.
e) : This is a covalent compound and is non polar which are held by weak vander waal forces of attraction.
The picture of correct answer is attached it is the second one from the left since it has 5 electrons in outermost shell so it can share 3 electrons to complete the octet rule, while first one contains only one electron in outermost shell so it easier to be lost, third one has 8 electrons so it has complete valence shell and last one with only two electrons in outermost shell so it is easier to lose these two electrons.
from 5 to 7 electrons on outermost shell can form covalent bond
from 5 to 7 electrons on outermost shell can form covalent bond
Answer:
74.0 mL
Explanation:
In the equivalence point we have:
Where:
is the number of moles of the acid
is the number of moles of the base
Where M is the concentration and V is the volume
Hence the volume of the base is:
Therefore, is needed 74.0 mL of the potassium hydroxide solution to reach the equivalence point.
I hope it helps you!