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harina [27]
3 years ago
13

Which is an element? ... air ...carbon dioxide ...hydrogen ...water Description

Chemistry
2 answers:
d1i1m1o1n [39]3 years ago
7 0
The answer is Hydrogen.

Hydrogen can be found in the periodic table. There other choices are not element but compounds, which is a molecule made of more than ONE element.

Air is a mixture of gas molecules
Carbon dioxide is CO2
Water is H2O

So as you can see, they se al made of different elements
Natalka [10]3 years ago
5 0
All Elements are obtained in the periodic table & water is Not an element it is a compound.
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Answer:

18.066 × 10²³ particles

Explanation:

Given data:

Number of moles of Sn = 3 mol

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