n=m/M m-masa w gramach M-masa molowa 1 atomu
a)
M Al=27g/mol 27g->342g
M Al2(SO4)3=342g/mol xg->1000g x=1000*27/342=79g -> 79/27=2,9mol
b)
M Al=27g/mol 27g->78g
M Al(OH)3=78g/mol yg->200g y=200*27/78=69g -> 69/27=2,6mol
c)
M Al=27g/mol 27g->102g
M Al2O3=102 zg->0,15kg=150g?? z=150*27/102=38g -> 38/27=1,5mol
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n=m/M m-masa w gramach M-masa molowa 1 atomu
a)
M Al=27g/mol 27g->342g
M Al2(SO4)3=342g/mol xg->1000g x=1000*27/342=79g -> 79/27=2,9mol
b)
M Al=27g/mol 27g->78g
M Al(OH)3=78g/mol yg->200g y=200*27/78=69g -> 69/27=2,6mol
c)
M Al=27g/mol 27g->102g
M Al2O3=102 zg->0,15kg=150g?? z=150*27/102=38g -> 38/27=1,5mol