calculate the molar mass of the following substances of Ethane C2 H2 ,sulphur molecule S8 , Phosphorus molecules P4 (atomic mass of aluminium : 27),hydrochloric acid ,HCI
and nitric acid HNO3
Answers
Answered by
1
Answer:
ethane 26
Explanation:
256 sulphur molecule
Answered by
13
Answer:
Explanation:
(a) Ethyne (C2H2) = 2×Mass of C atom+2×Mass of H atom=2×12+2×1=24+2=26 g/mol
(b) Sulphur dioxide (S8)=8×Mass of sulphur atom=8×32=256 g/mol
(c) Phosphrous(P4) =4×Mass of P atom=4×31=124 g/mol
(d) HCl=1×Mass of H atom+1×Mass of Cl atom=1+35.5=36.5 g/mol
(e) HNO3 =1×Mass of H atom+1×Mass of N atom+3×Mass of O atom
=1×1+1×14+3×16=63 g/mol
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