Răspuns:
a) MCaCO3=40+12+3x16=100g/mol
n=m/M=40/100=0,25moli
b)
MMgCl2=24+2x35,5=95g/mol
n=m/M=19/95=0,2moli
c)
Mbr=2x80=160g/mol
n=m/M=80/160=0,5moli
d)
MCa(OH)2=40+2x16+2x1=74g/mol
n=m/M=37/74=0,5moli
e)
MCH4=12+4x1=16g/mol
n=m/M=40/16=2,5moli
Explicație:
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Răspuns:
a) MCaCO3=40+12+3x16=100g/mol
n=m/M=40/100=0,25moli
b)
MMgCl2=24+2x35,5=95g/mol
n=m/M=19/95=0,2moli
c)
Mbr=2x80=160g/mol
n=m/M=80/160=0,5moli
d)
MCa(OH)2=40+2x16+2x1=74g/mol
n=m/M=37/74=0,5moli
e)
MCH4=12+4x1=16g/mol
n=m/M=40/16=2,5moli
Explicație: