Hi Stackexchange Community,

I'm working on my chemistry lab report. The initial instructions were to test the hypothesis that the mass of products of a reaction will equal the mass of the reactants.

Basically we where given a equation, our job was to balance and figure out the theoretical mass of reactants, and the theoretical mass of products.

There we're a total of three questions, the first of which I got a differential value of (0.2) , (0.1). This seemed to be the most logical for me since I knew the law of conservation of mass implied that mass cannot be created nor destroyed but could be transformed. I attributed this small differential value to this transformation theory.

However, the next two questions I attempted I got a very large differential value (40-120), which rejects my initial hypothesis.

I believe I may have missed something in the second and third question, here are my attempted solutions any help would be appreciated!

Thank You!

Not sure if it matters, but we where given this program to enter our calculations to simulate the reactions :P