2h2s + so2 - 2h20 + 3s
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2Al+3S--->Al2S3
3s + 4t + 2s + 5s + 6tGroup all of the like 's' terms & 't' terms together:(3s+2s+5s) + (4t + 6t)10s + 10t or 10(s+t)
2t-4s
2s + s + 12 =132 ie 3s = 132 -12 3s = 120 s = 40
It is 4r + 12s