HW 9-25-08

HW 9-25-08 - c. 10.0500 g d. 7000 kg e. 7000. kg a. 4 b. 2...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Joseph Leonard Green Section 3 review p57 9/25/08 1. The density of copper is listed as 8.94 g/cm³. Two students each make three density determinations of samples of the substance. Student A’s results are 7.3 g/mL, 9.4 g/mL, and 8.3 g/mL. Student B’s results are 8.4 g/cm³, 8.8 g/cm³, and 8.0 g/cm³. Compare the two sets of results in terms of precision and accuracy. Student A’s results are neither accurate nor precise. Student B’s results are precise and somewhat accurate. 2. How many significant figures are there in each of the following measured values? a. 6.002 cm b. 0.0020 m
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: c. 10.0500 g d. 7000 kg e. 7000. kg a. 4 b. 2 c. 6 d. 1 or 4 e. 4 3. Round 2.6765 to two significant figures. 2.7 4. Carry out the following calculations. a. 52.23 g + 1.7502 g b. 12 m x 6.41 m c. _16.25 g__ 5.1442 mL a. 53.98 g b. 77 m c. 3.159 g/mL 5. Perform the following operations. Express each answer in scientific notation. a. (1.54 x 10^-2 g) + (2.86 x 10^-1 g) b. (7.023 x 10^9 g) (6.62 x 10^7 g) c. (8.99 x 10^-4 m) x (3.57 x 10^4 m) d. _2.17 x 10^-3 g_ 5.022 x 10^4 mL a. 3.014 x 10^-3 g b. 6.69023 x 10^11 g c. 3.2 x 10^1 m d. 4.3 x 10^-6...
View Full Document

This note was uploaded on 12/09/2009 for the course CHEM 204 taught by Professor Donnegan during the Spring '08 term at Alabama.

Page1 / 2

HW 9-25-08 - c. 10.0500 g d. 7000 kg e. 7000. kg a. 4 b. 2...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online