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4 years ago

During human development, certain cells of the blastocyst can develop into

Chemistry

1 answer:

lidiya [134]4 years ago

8 0

Answer:

Embryonic stem cells are pluripotent, meaning they can give rise to every cell type in the fully formed body, but not the placenta and umbilical cord. ... Human embryonic stem cells have been derived primarily from blastocysts created by in vitro fertilization (IVF) for assisted reproduction that were no longer needed

Explanation:

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When [OH⁻] changes from 10-9to 10-11in a solution: Kw = [H+][OH-] What happens to [H+]?

damaskus [11]

Kw = 10^-14 so IF [OH-] changes from 10^-9 to 10^-10 the [H+] will have to change from 10^-5 to 10^-4

7 0

3 years ago

Read 2 more answers

A 250. ml sample of 0.0328m hcl is partially neutralized by the addition of 100. ml of 0.0245m naoh. find the concentration of h

Ksenya-84 [330]

Answer: 0.0164 molar concentration of hydrochloric acid in the resulting solution.

Explanation:

1) Molarity of 0.250 L HCl solution : 0.0328 M

$Molarity=\frac{\text{Number of moles}}{\text{Volume of solution in liters}}=0.0328=\frac{\text{Number of moles}}{0.250 L}$

Moles of HCl in 0.250 L solution = 0.0082 moles

2) Molarity of 0.100 L NaOH solution : 0.0245 M

$Molarity=\frac{\text{Number of moles}}{\text{Volume of solution in liters}}=0.0245=\frac{\text{Number of moles}}{0.100 L}$

Moles of NaOH in 0.100 L solution = 0.00245 moles

3) Concentration of hydrochloric acid in the resulting solution.

0.00245 moles of NaOH will neutralize 0.00245 moles of HCl out of 0.0082 moles of HCl.

Now the new volume of the solution = 0.100 L +0.250 L = 0.350 L

Moles of HCl left un-neutralized = 0.0082 moles - 0.00245 moles = 0.00575 moles

$Molarity=\frac{\text{number of moles}}{\text{volume of solution in L}}$

Molarity of HCl left un-neutralized : $\frac{0.00575 moles}{0.350L}=0.0164 M$

0.0164 molar concentration of hydrochloric acid in the resulting solution.

3 0

3 years ago

What is the difference between dioxide and oxide

lesantik [10]

Answer:

As nouns the difference between dioxide and oxide

is that dioxide is (chemistry) any oxide containing two oxygen atoms in each molecule while oxide is (chemistry) a binary chemical compound of oxygen with another chemical element.

Explanation:

4 0

3 years ago

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What causes surface tension under water

RSB [31]

Surface tension under water results from greater attraction of liquid molecules to each other, due to a process called cohesion, than to molecules in the air, due to a process called adhesion.

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3 years ago

Why does increasing the concentrations of two reactants in solution make a

Rudik [331]

Answer:

C. When there are more particles in the same space, they collide

more often.

Explanation:

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3 years ago