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Leona [35]
3 years ago
13

How are elements identified in terms of their atoms?

Chemistry
2 answers:
velikii [3]3 years ago
7 0
Their identified by the number of protons they have in the nucleus which = their electrons.

Liono4ka [1.6K]3 years ago
4 0
Elements are identified by their relative atomic mass or the number of electrons or protons they possess.
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A catalyst

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1 point<br> How many moles of CO2 are there in 100.0 grams of CO2?
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Please help me with chemistry
vodka [1.7K]

Table Giving Answer

Element Atomic mass % Amount

Mg_24     24                79    18.96

Mg_25 25                10    2.5

Mg_26 26                11   2.86

   

Total                     24.32

Discussion

The method of calculation for this table, which was done in Excel (a spread sheet) is shown below. Assume that there is 100 grams of material of "pure" magnesium. What is it's mass?

<em><u>Sample  Calculation</u></em>

The the sample atomic mass = 24

Mass = % * sample atomic mass

Mass = 79% * 24

Mass = (79/100) * 24

Mass = 18.96

<em><u>Note</u></em>

The other two elements are found exactly the same as the sample calculation.

Then all you do is add the 3 masses together.

Answer

The mass of Mg to 1 decimal place is 24.3 <<<< Answer.


7 0
3 years ago
Describe the chemical reaction based on the
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Explanation:

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Answer:

i wold think it is C

Explanation:

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