View the step-by-step solution to:

Question

# I need help figuring out Experiment 2's A) thru H) and Experiment 3's 1 &amp; 2, as well as Two samples of

different weight are studied. Thank you!

EXPERIMENTS IN GENERAL CHEMISTRY Additional Pre-Lab Components CHEM1075
1 Experiment 1: Measured properties are characterized by their accuracy and their precision. When using measured values in calculations, it is most important to note that precision can neither be gained nor lost. The rules for significant figures usually obey this principle, but sometimes the result has to be adjusted to maintain precision. Use the following example to illustrate these ideas: 1. A liquid was measured to occupy a volume of 4.8 mL using a graduated cylinder, and its mass was determined using balances of different precision: Triple-beam balance (precision of 1 dec. pl.): m = 5.3 g Analytical balance (precision of 3 dec. pl.): m = 5.261 g Show that both mass-measurements, combined with the volume measurement, yield the same value for the density of the liquid. 2. A high-density liquid (d = 2.32 g/cm 3 ) was measured to occupy a volume of 49.4 mL using a graduated cylinder. Report the mass of the liquid with correct precision. Is this result in accordance with the rules for significant figures? When measuring volumes, the correct reading of the meniscus is key to producing reliable results. Use the following example to illustrate this idea: 3. A liquid was measured to occupy a certain volume using a graduated cylinder, and its mass was determined using balances of different precision. Two experimenters report two different values for the density: Experimenter 1: m = 37.598 g (Analytical balance) d = 1.0 g/mL Experimenter 2: m = 37.6 g (Triple-beam balance) d = 1.1 g/mL Decide which experimenter reports a correct result, and explain where the other experimenter went wrong.
Show entire document

### Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

### -

Educational Resources
• ### -

Study Documents

Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

Browse Documents