Multiple Choice
How many significant figures are in the number 10?
1. Intro to General Chemistry
Significant Figures
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How many significant figures are contained in the following measurement?
3,482,005 mg
A
0
B
5
C
6
D
7
E
infinite
Verified step by step guidance1
Identify the rules for determining significant figures: All non-zero digits are significant, zeros between non-zero digits are significant, and trailing zeros in a decimal number are significant.
Examine the given measurement: 3,482,005 mg.
Count each digit in the number: Start from the leftmost non-zero digit to the rightmost non-zero digit.
Recognize that all digits in 3,482,005 are non-zero or zeros between non-zero digits, making them all significant.
Conclude that the measurement 3,482,005 mg contains 7 significant figures.
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Related Practice
Textbook Question
A scientist uses an uncalibrated pH meter and measures the pH of a rainwater sample four times. A different pH meter was calibrated using several solutions with known pH. The true pH of the rain was found by the calibrated pH meter to be 5.12. What can be said about the level of accuracy and precision of the uncalibrated pH meter? (LO 1.14)(a) The uncalibrated pH meter is accurate and precise. (b) The uncalibrated pH meter is neither accurate nor precise. (c) The uncalibrated pH meter is accurate but not precise. (d) The uncalibrated pH meter is precise but not accurate.
