14 Copper(II) oxide reacts with hydrogen.
CuO + H2 → Cu + H2O
Which row is correct?
oxi...
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Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?
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0.09 moles of sodium sulfate in 12 ml of solution
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Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
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