The compound is made of 2 oxygen molecules and the oxygen made of 20.61% its mass. If the molar mass of oxygen is 16, the molar mass of the compound will be:
2* oxygen* (16g/mol / oxygen) = 20.61% compound mass
compound mass= 32g/mol / 20.61%
compound mass= 155.26 g/mol
Physiological pH is between 7.37 and 7.43
Lysine is a basic amino acid, which means
it has two NH2 groups and one COOH group.
Lysine pKas are: 2.16, 9.06 and 10.05
At low pH (lower than the first pKa, in
this case: lower than 2.16) the three groups are protoned. As you increase pH,
the first group to lose its proton is the acid group, then the alpha-amino
group and then the R-amino group. You will have everything non protoned at a
high pH (higher than the highest pKa, in this case: 10.05).
Physiological pH is higher than the lowest
pKa and lower than the middle pKa, so it’s the second case: the acid is
not protoned, the R-amino is protoned and the alpha amino is protoned.
Protoned aminos are cations: NH3+.
Answer:
group 2
Explanation:
because they are the only alkalines earth metals on the periodic table
Answer
:small vibrational movements.
Explanation:
The particles of a solid are not able to move out of their positions relative to one another, but do have small vibrational movements.
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-Darkspirit-
