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Chemistry 7 Online
OpenStudy (ilovebmth1234):

A student sets up a reaction and calculates a possible yield of 55.9 grams of silver. If the student performs the reaction and the mass of actual silver obtained is 42.5 grams, what is the percent yield? A) 26% B) 36% C) 76% D) 86%

OpenStudy (ilovebmth1234):

@sammyalabamy

OpenStudy (sammyalabamy):

how much silver is gone between the start and the end?

OpenStudy (ilovebmth1234):

im not sure this is the question they gave me

OpenStudy (sammyalabamy):

subtract the end result from the start first

OpenStudy (ilovebmth1234):

13.4

OpenStudy (sammyalabamy):

now divide the start by the difference between the start and end

OpenStudy (ilovebmth1234):

4.171 would be that answer

OpenStudy (sammyalabamy):

the problem that i asked would by set up like 13.4/55.9

OpenStudy (ilovebmth1234):

0.23971377

OpenStudy (sammyalabamy):

subtract that from 1

OpenStudy (ilovebmth1234):

0.76028623

OpenStudy (sammyalabamy):

move the decimal two places to the right

OpenStudy (ilovebmth1234):

76.028623

OpenStudy (sammyalabamy):

theres your answer

OpenStudy (ilovebmth1234):

C)76%

OpenStudy (sammyalabamy):

yep

OpenStudy (ilovebmth1234):

mind helping m with one more?

OpenStudy (sammyalabamy):

sure

OpenStudy (ilovebmth1234):

When given an Activity Series list of elements, the most reactive elements are always found where? A) at the top B) at the bottom C) in the middle D) not enough information to determine

OpenStudy (sammyalabamy):

look up the activity series. it should tell you there

OpenStudy (ilovebmth1234):

At the top right?

OpenStudy (sammyalabamy):

yeah. sorry for the delay

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