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this problem is involving sig figures. i want to cross check my

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Be sure to answer all parts. Determine the number of significant figures in each of the following measurements: (a) 12 mL (b) 8201 g (c) 0.0610 m3 (d) 6.2 x 103 molecules (e) 780 kg

Answer :

(a) 12 mL: 2 significant figures, (b) 8201 g: 4 significant figures, (c) 0.0610 m³: 4 significant figures, (d) 6.2 x 10³ molecules: 2 significant figures, (e) 780 kg: 2 significant figures.

In the field of chemistry, significant figures of a number are digits that carry meaning contributing to its precision. This includes all nonzero numbers, zeroes between nonzero numbers, trailing zeroes after a decimal point in a number, and all zeros when they are part of a measurement.

12 mL has two significant figures. It includes all the non-zero digits.

8201 g has four significant figures as each of the numbers in the measurement contribute to its precision.

0.0610 m3 has three significant figures. The leading zero is not counted, but the trailing zero after the decimal point is counted as it indicates precision.

6.2 x 103 molecules has two significant figures. Remember that digits in the exponential part of a number in scientific notation aren't considered significant.

780 kg has two significant figures. The zero is not after a decimal point, hence it's not considered significant.

Learn more about the topic of Significant Figures here:

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