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Anastasy [175]
3 years ago
13

#5 true or false and elements MASS number tells the number of protons in its nucleus. If mass is the wrong term please tell me t

he right term

Chemistry
2 answers:
vitfil [10]3 years ago
7 0
The mass number is protons and neutrons. So I think it’s false
koban [17]3 years ago
4 0
The answer to number 5 would be FALSE.
It is the ATOMIC number that tells the amount of proton in the nucleus of an element.


Also, I wasn't sure if you wanted help with the other questions so I took the liberty of answering them anyway.

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What’s the PH and OH- of 6.0 x 10^-10?
Zarrin [17]

Answer:

The answer to your question is pH = 9.2;  [OH] = 1.58 x 10⁻⁵

Explanation:

Data

[H⁺] = 6.0 x 10⁻¹⁰ M

pH = ?

pH definition. pH measures the hydrogen concentration. pH measures the acidity and the alkalinity of a solution. A solution is acid if the pH goes from 0 to 6.9, a neutral solution has a pH of 7 and an alkali solution has a pH from 7.1 to 14.

pOH measures the [OH⁻] concentration

Formula

             pH = -log[H⁺]

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-Substitution

            pH = -log[6 x 10⁻¹⁰]

-Simplification

            pH = - (-9.2)

            pH = 9.2

-Calculate pOH

            pOH = 14 - pH

            pOH = 14 - 9.2

            pOH = 4.8      

-Calculate the concentration of OH⁻

           pOH = -log[OH⁻]

           [OH⁻] = -antilog4.8

           [OH] = 1.58 x 10⁻⁵      

8 0
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Therefore, the answer is that Kepler's second law of planetary motion states that planets cover the same area during equal time periods.
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D. An electron may acr with either particle like or wave like
8 0
3 years ago
Read 2 more answers
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