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What is the sum of
6.6412 g + 12.85 + 0.046 g + 3.48 g
Expressed to the correct number of significant figures?
A. 2.3 g
B. 23.0 g
C. 23.017 g
D. 23.02 g
Rule: when adding measurements, the number of decimal places in the sum (answer) is the same as the number of decimal places in the least precise measurement. The least precise measurement was measured to hundredths of a g (12.85 and 3.38).
Therefore the sum of the numbers cannot be more precise than this.
 
 
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PillBill
PillBill
1465 Points
Been a pharmacist for about three years now.
 
 
Question Details
 
 
Taken: 52 times
Added: 8/11/2008
Liked: 1 time
Taggged: Chemistry, PCAT
 
 
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