Question

20 moli oxigen=.... Grame
230 g Sodiu=...... Moli
54 g aluminiu=.... Moli
6 moli sulf=....... G
2 moli hidrogen=....... Atomi
16 g sulf=....... Moli
4 moli potasiu=........ G


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Answer 1

MO2 = 32g/mol

n=m/M=>m=n*M= 20*32 = 640g O2

MNa = 23g/mol

n=m/M=230/23=10 moli Na

MAl = 27g/mol

n=m/M = 54/27 = 2 moli Al

MS = 32g/mol

m S = 6*32 = 192g

nr atomi H2 = 2*2*NA = 4*NA = 4*6,022*10^23 atomi = 24,088*10^23 atomi H2

MS = 32g/mol

n=m/M=16/32=0,5 moli S

MK =39g/mol

m K = 4*39=156g