Question

can someone PLEASE double check my stoichiometry answers? files are down below..

Answer 1

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Answer 2

multiple choice questions are correct

a few nitpicks for the short answer questions. for the caffeine one, the correct order for chemical formulas is Carbon, Hydrogen, and then other elements in alphabetical order, so it would be C then H then N then O (the math/subscripts are all correct just switch the order to C4H5N2O and C8H10N4O2. it's probably not that big of a deal, you'll probably get credit either way.

for the boric acid question, if the subscript is 1 we usually don't write the 1. H3BO3 would suffice.

for the copper and nitric acid reaction there would be 3 sig figs not 2. needs another decimal place.

there's something amiss about your calculations for P2-Q3. you correctly calculated the number of grams for C, H, and O, but in the next step you're trying to divide grams by moles H. you need to convert grams C, H, and O to moles C, H, and O first and then divide by the lowest molar quantity to get the ratios.

Answer 3

most of them look right to me, good job!