Exam number: 700634RR
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Exam number: 700634RR
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Exam Instructions
Question 1 of 20 :
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1. When determining the mass of product used or reactant consumed, the number of moles must be determined before comparing two
substances because
A. masses are the same for different substances.
OB. moles react.
O C. different substances have different masses due to their atomic make-up.
OD. atoms have the same mass but moles are different for each substance.
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