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a) 1+3 = 4;
150 / 4 = 37,5[%]
b) 1+7 =8.
200[g] / 8 = 25 [%].
c)
1+1 =2;
120;[g] /2 =69[%].
Odp.2
a) ms = (0,1[%] *20 ) / 100[%] = 0,02[g].
m H2O = 120[g] - 0,02[g] = 119,8[g].
b) ms = (95[%] *300[g] ) / 100[%] = 285[g].
mw = 300[g] - 285[g] = 15[g].
c) 1+1 =2.
20[g] /2 = 10[g].
ms = (50[%] *10[g] ) / 100[%] = 5[g].
mw = 20[g] - 5[g] = 15[g] H2O.