Which substances react together to give hydrogen?
a) calcium oxide and water
b) copper and dilute sulfuric acid
c)copper and steam
d) magnesium and steam
Answers
Answered by
1
Explanation:
Hydrogen combines with other elements to form numerous compounds including water (H2O), ammonia (NH3), hydrochloric acid (HCl) and hydrogen peroxide (H2O2). Water (H2O) is widely used in chemical reactions as a solvent or reactant and less commonly as a solute or catalyst
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4
Answer:
calcium oxide and water give h2
may be helpful for u
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