The reaction of hydrogen gas (H2) with oxygen gas (O2) is a COMBINATION or SYNTHESIS reaction, because multiple substances combine to form fewer substances. Here, the two gases form one substance, water (H2O):
2H2 + O2 -- > 2H2O
Answer:sorry id ont known
Explanation:give m brianlest if you want
A solution is uniform throughout, so your answer is the first one.
