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Karolina [17]
2 years ago
11

Need help, please. :)

Chemistry
1 answer:
wolverine [178]2 years ago
6 0

A change of one unit on the pH scale represents a change in the concentration of hydrogen ions by a factor of 10, a change in two units represents a change in the concentration of hydrogen ions by a factor of 100. Thus, small changes in pH represent large changes in the concentrations of hydrogen ions.

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Calculate the molarity of a solution of monoprotic KHP prepared by mixing a 0.5237 g KHP in 50.0 mL of water .
Sergio039 [100]

Answer:

M=0.0513M

Explanation:

Hello!

In this case, since the molarity of a solution is computed by dividing the moles of solute by the volume of solution, we notice we first need the moles of KHP as shown below:

n=0.5237g*\frac{1mol}{204.22 g} =0.00256mol

Next, the volume in liters:

V=50.0mL*\frac{1L}{1000mL}\\\\V=0.0500L

Thus, the molarity turns out to be:

M=\frac{n}{V}\\\\M=\frac{0.00256mol}{0.05000L} \\\\M=0.0513M

Best regards!

3 0
3 years ago
Which of the following is one way that nuclear reactions differ from chemical reactions?
yuradex [85]

Answer:

The correct option is C.

Explanation:

Nuclear and chemical reactions are two types of reactions that one usually encounter in chemistry. These two reactions differ from each other significantly. For instance, the nuclear reactions usually involve the nucleus of the involving atoms while chemical reactions has to do with the electrons that are located outside of the nucleus of the atoms. Also, it is only chemical reaction that are influenced by factors such as temperature, pressure, catalyst, etc. Such factors does not determine the rate of nuclear reactions.

3 0
3 years ago
WILL MARK BRAINLIEST
tiny-mole [99]

Answer:

b) 590

Explanation:

5 0
3 years ago
Please help! It's chemistry question
SashulF [63]
It looks like it is going by 25's so I would say 22.75 mL
3 0
3 years ago
Cutting, melting, bending, or crushing are examples of what kind of change?
Ksivusya [100]

Answer:

those are all physical changes and most physical changes can be undone like crushing a pice of metal you can flatten it back out you anwser is physical change

Explanation:

8 0
3 years ago
Read 2 more answers
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