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How many significant figures are in the number 0.00452?
Leading zeros (zeros before non-zero digits) are not significant.
How many significant figures are in the number 305.0 mL?
Zeros between non-zero digits are significant. Trailing zeros are significant if there is a decimal point.
How many significant figures are in the number 2.0070?
Systematically apply all the rules for significant figures.
True or False: When multiplying 1.2 cm by 3.456 cm, the answer should have three significant figures.
Remember the rule for multiplication regarding significant figures.
A graduated cylinder has markings every 1 mL. You measure a volume of 25.5 mL. When considering the absolute uncertainty, how many significant figures should be used to report this measurement?
For analog instruments, estimate to one-half of the smallest scale division. This estimated digit is significant.
You perform a dilution, taking 10.00 mL of a stock solution and diluting it to a final volume of 100.00 mL. If the stock solution's concentration is 0.150 M, calculate the diluted concentration, ensuring your final answer reflects the correct number of significant figures.
Consider how each volume measurement (which are exact numbers in this context and do not limit sig figs) and the initial concentration contribute to the significant figures of the final answer. Remember the dilution formula: M1V1=M2V2
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