Ответ:
s+h2-h2s
h2s+2k-k2s+h2
k2s+l-2kl+s
2kl+h2-2hl+2k
hl+nano3-hno3+nal
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Ответ:
s+h2-h2s
h2s+2k-k2s+h2
k2s+l-2kl+s
2kl+h2-2hl+2k
hl+nano3-hno3+nal