Chapter 1, Problem 1.66E

For each of the following numbers, determine the number ofsignificant figures it contains, rewrite it without using scientific notation, and determine thenumber of significant figures in the result. (a) 3.050 × 10–4 , (b) 4.3200 × 102 , (c) 8.001 × 10–7, (d) 2.006080 × 105 , (e) 1.503 × 10–5 , (f) 6.07510 × 104

There are exactly 60 seconds in a minute, exactly 60 minutes in an hour, exactly 24 hours in a mean solar day, and 365.24 solar days in a solar year. How many seconds are in a solar year? Give your answer with the correct number of significant figures.

A.Measurement of the density of water.Weigh a small beaker (degree of precision?). Place about 25 mL of water in a 50 mL graduated cylinder and record its volume (degree of precision?). Pour the water into the beaker and weigh the beaker and water together. From these data, calculate the density of the water, giving your answer with the proper number of significant figures.Volume of water in cylinder23.5 mLMass of empty beaker75.360 gMass of beaker with water 99.030 gMass of water in beaker ______gDensity of water g/mL