Exam number: 700634RR Exam Guidelines
Exam Instructions
Question 1 of 20 :
Select the best answer for the question
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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