3 years ago

Question 9 of 10

Chemistry

2 answers:

Tomtit [17]3 years ago

6 0

Answer:

3 is the minimum of energy level that contains dorbitals

mars1129 [50]3 years ago

5 0

Answer:

A 3

Because d is 3rd orbital it is present in third shell

Explanation:

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aliina [53]

<h3>Answer:</h3>

c=54

Explanation:

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c=54

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butalik [34]

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3 years ago

What is the pH difference of two samples if the concentration of [H+] ions is 1000-fold less in the second sample?

snow_tiger [21]

The correct answer is a. This is because the pH of a solution is defined as -log10(concentration of H+ ions). An inverse logarithmic scale such as this means that a solution with a lower concentration of H+ ions will have a higher pH than one with a higher concentration. Therefore we know that the pH of the second sample will be higher than the first.

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3 years ago

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How many protons and neutrons are in the nucleus of isotope with mass of 68.926 amu?

Sidana [21]

There are 30 protons and 39 neutrons in the nucleus.

This must me the isotope of an element with an atomic mass close to 69 u.
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2 years ago

Write a question here it’s simple.

dusya [7]

Answer:

what type of question?

Explanation:

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