Resources that come from nature, some examples include: Water, Gold, Oil, Coal, Apples, Oranges, etc.
Answer:
Oxygen is in group 16/VIA, which is called the chalcogens, and members of the same group have similar properties. Sulfur and selenium are the next two elements in the group, and they react with hydrogen gas (H2) in a manner similar to oxygen.
Explanation:
For the first one.. the Reactant side is Zn+2HCl produces Zncl2 and H2... and it is balanced too
