Дано:
Cr2(CO3)3
Знайти:
W (Cr)
W (C)
W (O)
Розвязання:
Mr (Cr2(CO3)3) = Ar(Cr)*2 + Ar(C)*3 + Ar(O)*6 = 52*2 + 12*3 + 16*9 = 104 + 36 + 96 = 236
W (Cr) = * 100% = * 100% = 44 %
W (C) = * 100% = * 100% = 15%
W (O) = * 100% = * 100% = 41%
Відповідь: W (Cr) =44% ; W (C) = 15% ; W (O) =41% ;
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Answers & Comments
Дано:
Cr2(CO3)3
Знайти:
W (Cr)
W (C)
W (O)
Розвязання:
Mr (Cr2(CO3)3) = Ar(Cr)*2 + Ar(C)*3 + Ar(O)*6 = 52*2 + 12*3 + 16*9 = 104 + 36 + 96 = 236
W (Cr) = * 100% = * 100% = 44 %
W (C) = * 100% = * 100% = 15%
W (O) = * 100% = * 100% = 41%
Відповідь: W (Cr) =44% ; W (C) = 15% ; W (O) =41% ;