Find the Molar Mass of the given elements or compounds, express your answer in g/mol (show your solution).
1. MgCl2
2. C2H
3. AgNO.
4. Na
5. Fezo,
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Answer:
(i) Molar mass of water (H
2
O)
Atomic mass of H=1
Atomic mass of O=16
H
2
O=2×H+1×O
Molar mass of water=2×1+16=18g/mol
(ii) Molar mass of carbon dioxide (CO
2
)
Atomic mass of C=12
Atomic mass of O=16
CO
2
=1×C+2×O
Molar mass of CO
2
=12+2×16=44g/mol
(iii) Molar mass of methane (CH
4
)
Atomic mass of C=12
Atomic mass of H=1
CH
4
=1×C+4×H
Molar mass of methane=12+4×1=16g/mol
Explanation:
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