1) 1mol..........................40g
0.1moli..........................x
x=40*0.1/1=4g Ca
5kmoli=5000moli
1mol..........................40g
5000moli.....................y
y=5000*40/1=200000g=200kgCa
2)1mol........................31g
z moli.........................93g
z=93*1/31=3moli P
93kg=93000g
1mol........................31g
q moli.........................93000g
q=93000*1/31=3000g=3kg
3)V=27cm³=0.027dm³=0.000027m³
m=p*V
m=0.2106kg Fe=210.6g
1mol...........................56g
w moli..........................210.6g
w=210.6*1/56=3.76moli