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Nat2105 [25]
3 years ago
8

Why does the level of progesterone and oestrogen remain highly during pregnancy?

Biology
1 answer:
8_murik_8 [283]3 years ago
6 0
It is due to morning sickness. It is common in 50-85% of women during  pregnancy. Some women who take birth control pills may also experience this.
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What is the pH if 20 mL of pH = 2 solution is diluted to a final volume of 600 mL?
Mashutka [201]

Explanation:

Hydrogen atoms contain 1 proton and 1 electron while being devoid of neutrons. When they lose their electron they form an ion or H+, a particle carrying a unit of positive charge.  pH measures how basic or acidic a water-based solutions are, with a formula for pH is

pH = -log[H+].

...where pH is -base 10 log of the concentration of hydrogen ions within the solution.

Initial volume= 20 mL

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# of dilutions= \frac{600}{20} = 30

for a pH 2= [H+]= 10^{=2}

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and pH is an antilog of [H+]= - log \frac{10^{-2}}{30} = 3.333 * 10^{-4}

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Learn more about pH at brainly.com/question/4981491

Learn more about pKA at brainly.com/question/11062486

#LearnWithBrainly

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