Chem 103 Significant Figures and Chapter 1 Suzanne Part 1: Significant Figures Significant Figures Rules 1. All ___________ _________ are significant. 2. Zeros ____________ ___________ are significant (known as ___________ zeros). 3. Zeros to the __________ of a number are not significant (also known as ___________). 4. Zeros to the __________ of a number after the decimal point are significant (__________ zeros). 5. What must come after a number to make all digits significant? Write the number of significant figures for each: a. 0000.465 b. 1946 c. 3500. d. 0.00001385 e. 0.29500014 f. 0.0050760 Part 2: Significant Figures Calculations I. Adding and Subtracting Sigfigs Problems: 1) 24.1 + 21.08 = 4) 103.12 – 45.6 = 2) 5.8 – 0.009 = 5) 97.2 + 125 = 3) 0.0404 + 125.045 = 6) 7.20 + 3.013 + 0.04327 = II. Multiplying and Dividing Sigfigs Problems: 1) (0.0404) • (16) = 4) 89 ÷ 12.08 = 2) 2.30 ÷ 24 = 5) (0.0821) • (0.023) • (298) = 3) (15.4 3 ) • (21 3 ) = 6) (0.0821)•(0.023)•(298) 1.5 = Answer key ! nonzero integers between 2 integers captive left leading right trailing decimal point 3. sigfigs 4 sigfigs 4 sigfigs -04 sigfigs leading zeros captive Srsigfigs 5 sigfigs ieadi%captivettrailingsigaifikfntthf.ge#stqe -eramonmn.info " s 40.0 45.18 -045.2 57.52 -057.5 isiglig 2¥94 'S g. ya , → g. g 222.2 -0222 125.0854 -0 125.085 10.25627-010.26 Eg 6.890-3 sigfigs Look at the least amount of × 18.931 ← ssigfigs siggigs overall ¥43459 130 or 1.30×102.6464-00.65 7.367549 -07.4 0.09585 -00.10 0.5627 -00.56 ✓ I 323.4 ) 0.37514 -0 0.38 3. 2×1029
3
Embed
Answer - SI PROGRAM€¦ · 1.5 = Answer! nonzero integers between 2 integers captive left leading right trailing decimal 3. sigfigs 4 sigfigs 4 sigfigs-04sigfigs leading zeros captive
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Chem 103 Significant Figures and Chapter 1 Suzanne
Part 1: Significant Figures
Significant Figures Rules
1. All ___________ _________ are significant.
2. Zeros ____________ ___________ are significant (known as ___________ zeros).
3. Zeros to the __________ of a number are not significant (also known as ___________).
4. Zeros to the __________ of a number after the decimal point are significant (__________ zeros).
5. What must come after a number to make all digits significant?