Question

multiply the measurements. 0.789 g/ml × 27 ml write your answer with the correct number of significant figures. round if necessary. g

Explanation:

Step1: Multiply the numbers

$0.789\times27 = 21.303$

Step2: Determine significant - figures

The number 0.789 has 3 significant figures and 27 has 2 significant figures. In multiplication, the result should have the same number of significant figures as the number with the least significant figures among the values being multiplied. So, the result should have 2 significant figures.

Step3: Round the result

Rounding 21.303 to 2 significant figures gives 21.

Answer:

21