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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:

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Explanation:

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3 years ago
O 1. 12 moles
mars1129 [50]

Answer:

n_{H_2O}=5.94molH_2O

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Hello there!

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3 0
2 years ago
What determines an object’s ability to float?
Nezavi [6.7K]
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Density is calculated using the following equation: Density = mass/volume or D = m/v.

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finlep [7]

Answer:

hypochlorite ion

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