3
dioxid de carbon = gaz
nisip = solid
oxigen = gaz
mercur = lichid
alcool = lichid
calcar = solid
4-b
5-c
II.
1.
100% ................................ 60 Kg corp
7% ..................................... m = 4,2 kg sanga
4,2 kg ............................... 100% sange
x kg .................................... 55% plasma
= 2,31 kg plasma
100% plasma .................................. 2,31 kg plasma
90% apa ........................................... y = 2,08 kg apa
2.
100% alama ............ 40% cupru ........restul (60%) zinc
24g alama ................ xg cupru ........... .y g zinc
=9,6 g = 14,4 g
