2. Measurement and Problem Solving

Use the following graph for problems1.23 and 1.24: d. How many minutes were needed to reach a temperature of 45 °C?

a. What is the specific gravity of the following solution?

Assume that you are delivering a solution sample from a pipette. Figures (a) and (b) show the volume level before and after dispensing the sample, respectively. State the liquid level (in mL) before and after dispensing the sample, and calculate the volume of the sample. a.

b.

Measure the length of each of the objects in diagrams (a), (b), and (c) using the metric ruler in the figure. Indicate the numberof significant figures for each and the estimated digit for each. (2.2)a.