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Significant Figures Rules

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Questions and Answers

Which of the following is a correct rule regarding significant figures according to the text provided?

Zeroes at the end of a number are significant, regardless of the presence of a decimal point.

Non-zero numbers are not considered significant.

Leading zeroes are always significant.

Zeroes between non-zero numbers are not considered significant. (correct)

What is the correct rule for significant figures in relation to ending zeroes in a number?

Ending zeroes are never significant.

Ending zeroes are only significant if there is no decimal point present.

Ending zeroes are significant only if there is a decimal point present. (correct)

All ending zeroes are always significant.

How many rules from the total 5 rules for determining significant figures mention that all non-zero numbers are significant?

1 (correct)

Which of the following numbers has both leading and ending zeroes that are significant?

0800.10 Signup and view all the answers

In the context of significant figures, how are leading zeroes treated according to the rules?

Leading zeroes are never considered significant. Signup and view all the answers

If a number has multiple rules for determining significant figures applied to it, which rule takes precedence?

'Rules 1 & 4' Signup and view all the answers

When rounding the answer, why did the final mass of 917.551 g become 917.55 g?

To match the least number of significant figures in the numbers provided. Signup and view all the answers

What is the total mass when 0.03 g of NaCl is added to 155 g of water?

155.03 g Signup and view all the answers

In the calculation 28.3 cm X 5.0 cm, why is the answer rounded to 140 cm2 instead of 141.5 cm2?

To align with the least precise measurement's significant figures. Signup and view all the answers

Why does 454.02 g of aluminum hydroxide multiplied by 5.2 g equal 2400 g?