2 years ago

Someone please answer this.

2 answers:

7 0

The number of protoms tells you what position of the element on the periodic table is

5 0

<em><u>The number of protons tells you what position of the element on the periodic table is .</u></em>

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adell [148]

Do you mean atom :).

8 0

2 years ago

zhenek [66]

Answer:

I dont now but I think it is correct

3 0

2 years ago

MAXImum [283]

Answer:

4.083 * 10^20 atoms.

Explanation:

One Mole of phosphorus contains 6.022 * 10^23 atoms (Avogadros number)'

Since 1 mole of Phosphorus has a mass of 30.974 grams, 21 milligrams has

6.022 * 10^23 * 0.021 / 30.974

= 0.004083 * 10^23

= 4.083 * 10^20

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2 years ago

Y_Kistochka [10]

I believe that the correct answer is 13:10

8 0

2 years ago

Sophie [7]

1.59 moles

112211111111111112

8 0

2 years ago