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Определить степень окисления so2. Определите степень окисления элементов h2s. So2+o2=2so3 степень окисления. H2s степень окисления серы.
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Коэффициенты al s al2s3
Have или has правило
Has got или have got правило
Should must have to разница
Have to should разница
Reading bill
Глагол read в present continuous
Love reading books
Now read and answer
Love read book