What kind of energy do you need to break the chemical bonds between atoms in a compound like the water molecule?

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?