Question

38 An aluminum sample has a mass of 80.01 g and a density of 2.70 g/cm3. According to the data, to what number of significant figures should the calculated volume of the aluminum sample be expressed?(1) 1 (3) 3

(2) 2 (4) 4

Answer 1

C. 3

Step-by-step explanation:

To determine the number of significant figures use this memory aid: If the decimal is Absent count from the Atlantic (right side). If the decimal is Present count from the Pacific (left side). Start counting at the first non-zero digit.

The result of a calculation can only contain the lowest number of significant figures given in the problem. 2.70 has 3 significant figures.