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How many significant figures does the number 0.0560 have?
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1. Intro to General Chemistry
Significant Figures
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A laboratory measurement is recorded as 0.00450 g. How many significant figures does this measurement have?
A
4
B
3
C
2
D
5
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Identify all the digits in the measurement 0.00450 g, including zeros.
Recall that leading zeros (zeros before the first nonzero digit) are not significant; they only indicate the position of the decimal point.
Count the digits starting from the first nonzero digit: in 0.00450, the digits 4, 5, and the trailing zero after 5 are significant.
Understand that trailing zeros after a decimal point are significant because they indicate precision in the measurement.
Conclude that the number 0.00450 has 3 significant figures: 4, 5, and the trailing zero.
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