CHEM 1AL FinAL EXAM WiTH CORRECT ACTUAL QUESTiOnS
AnD CORRECTLY WELL DEFinED AnSWERS LATEST ALREADY
GRADED A+
limiting reagent and theoretical yield - AnSWER-the limiting reagent is the one that produces the
smallest theoretical yield. this yield is also the actual yield, as the reaction cannot go on when one of the
reactants has been used up
atom economy - AnSWER-mass desired products/(total mass products + byproducts)
experiment: airbags goal + summary - AnSWER-goal: create an airbag with the highest volume: mass
ratio (produce most N2 and O2)
summary: a good airbag is nontoxic and has a high volume: mass (--> high atom economy), quick
deployment
gas forming reactions - AnSWER-PV=nRT
-use stoichometry to find n moles of gas then plug in to formula
experiment: smells goal + summary - AnSWER-determine how chemical structure affects smell
-smell is determined by the geometry and functional groups of molecules
model vs hypothesis - AnSWER--model: general statement/observation of a phenomenon
-hypothesis: explanation of model
experiment: polymers goal + summary - AnSWER-molecules with high amounts of cross-linking will
stretch the most because IMF's will resist the force pulling the structure apart
AnD CORRECTLY WELL DEFinED AnSWERS LATEST ALREADY
GRADED A+
limiting reagent and theoretical yield - AnSWER-the limiting reagent is the one that produces the
smallest theoretical yield. this yield is also the actual yield, as the reaction cannot go on when one of the
reactants has been used up
atom economy - AnSWER-mass desired products/(total mass products + byproducts)
experiment: airbags goal + summary - AnSWER-goal: create an airbag with the highest volume: mass
ratio (produce most N2 and O2)
summary: a good airbag is nontoxic and has a high volume: mass (--> high atom economy), quick
deployment
gas forming reactions - AnSWER-PV=nRT
-use stoichometry to find n moles of gas then plug in to formula
experiment: smells goal + summary - AnSWER-determine how chemical structure affects smell
-smell is determined by the geometry and functional groups of molecules
model vs hypothesis - AnSWER--model: general statement/observation of a phenomenon
-hypothesis: explanation of model
experiment: polymers goal + summary - AnSWER-molecules with high amounts of cross-linking will
stretch the most because IMF's will resist the force pulling the structure apart
