Question

Calculati masa molara pentru:
HCl
Na(OH)3
H3PO4
Al2(SO4)3
Fe2O3
Na2O
CuCl2
H2O
Cl2
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Answer 1

M HCl=1+35,5=36,5g/mol
M Na(OH)3=23+3×16+3×1=23+48+3=71+3=74g/mol
M H3PO4=3+31+4×16=3+31+64=3+95=98g/mol
M Al2(SO4)3=2×27+3×32+3×4×16=54+96+3×64=54+96+192=150+192=342g/mol
M Fe2O3=2×56+3×16=112+48=160g/mol
M Na2O=23×2+16=46+16=62g/mol
M CuCl2=64+2×35,5=64+71=135g/mol
M H2O= 2+16=18g/mol
M Cl2=2×35,5=71g/mol
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