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saya pernah lihat soal ini dan volume SO2 = 1 Liter
MrX = gr/mol
lcari dulu massa X :
massa X = 1/2 SO2
massa SO2 belum di ketahui cari massa SO2 :
mol = V x 22,4
= 1 x 22,4 = 22,4 mol
massa SO2 = mol x Mr SO2
= 22,4 x 64 = 1433,6
massa X = 1/2 x 1433,6 = 716,8 gr
mol untuk unsur X :
nX = V x 22,4 = 2x22,4 = 44,8 mol
MrX= massa/mol
= 716,8/44,8
= 16