CHEM103 / CHEM 103 Module 1: (Latest
Update ) General Chemistry I with
Lab | Questions & Answers | Grade A | 100%
Correct. Portage Learning
1. Exponential Numbers: 623000000. = larger than 1 = positive exponent,
move decimal 8 places = 6.23 x 10^8
2. Density Calculation: D (g/ml) = M(g) / V(ml)
3. Significant Figures Rules: All non-zero digits are significant. Zeros
between or following non-zero numbers are significant. Zeros to the left of
a decimal are not significant.
4. Significant Figures in Calculations: In addition/subtraction, round to
fewest decimal places. In multiplication/division, round to fewest
significant figures.
5. Rounding Off Numbers: If digit to drop > 5, increase last retained digit by
1. If digit to drop < 5, keep last remaining digit. If digit to drop = 5, round
based on following digit.
, 6. Significant Figures Count: 1.) 0.004035: 4 sig figs 2.) 306.2: 4 sig figs 3.)
20.70: 4 sig figs 4.) 0.3450: 4 sig figs 5.) 0.0231: 3 sig figs 6.) 45.670: 5 sig
figs 7.) 0.00034:
2 sig figs
7. (5.625 + 8.15) x 2.34 + 3.2 =: 35.4 (to tenths place)
8. 7..390 + 1.53 - 2.810 =: 1.87 (to hundredths place)
9. (12.5340 - 8.350) / 4.76 + 8.35 =: 9.23 (to hundredths place)
10. Average of 0.1707, 0.1713, 0.1720, 0.1704, 0.1715 =: 0.1712
11. 5.) Calculate Volume: 73.5 ml (3 sig figs)
12. 6.) Calculate Density: 3.1 g/ml (2 sig figs)
13. Element Symbol: ALUMINUM: Al
14. Element Symbol: ANTIMONY: Sb
15. Element Symbol: ARGON: Ar
16. Element Symbol: ARSENIC: As
17. Element Symbol: BARIUM: Ba
18. Element Symbol: BERYLLIUM: Be
19. Element Symbol: BISMUTH: Bi
20. Element Symbol: BORON: B
Update ) General Chemistry I with
Lab | Questions & Answers | Grade A | 100%
Correct. Portage Learning
1. Exponential Numbers: 623000000. = larger than 1 = positive exponent,
move decimal 8 places = 6.23 x 10^8
2. Density Calculation: D (g/ml) = M(g) / V(ml)
3. Significant Figures Rules: All non-zero digits are significant. Zeros
between or following non-zero numbers are significant. Zeros to the left of
a decimal are not significant.
4. Significant Figures in Calculations: In addition/subtraction, round to
fewest decimal places. In multiplication/division, round to fewest
significant figures.
5. Rounding Off Numbers: If digit to drop > 5, increase last retained digit by
1. If digit to drop < 5, keep last remaining digit. If digit to drop = 5, round
based on following digit.
, 6. Significant Figures Count: 1.) 0.004035: 4 sig figs 2.) 306.2: 4 sig figs 3.)
20.70: 4 sig figs 4.) 0.3450: 4 sig figs 5.) 0.0231: 3 sig figs 6.) 45.670: 5 sig
figs 7.) 0.00034:
2 sig figs
7. (5.625 + 8.15) x 2.34 + 3.2 =: 35.4 (to tenths place)
8. 7..390 + 1.53 - 2.810 =: 1.87 (to hundredths place)
9. (12.5340 - 8.350) / 4.76 + 8.35 =: 9.23 (to hundredths place)
10. Average of 0.1707, 0.1713, 0.1720, 0.1704, 0.1715 =: 0.1712
11. 5.) Calculate Volume: 73.5 ml (3 sig figs)
12. 6.) Calculate Density: 3.1 g/ml (2 sig figs)
13. Element Symbol: ALUMINUM: Al
14. Element Symbol: ANTIMONY: Sb
15. Element Symbol: ARGON: Ar
16. Element Symbol: ARSENIC: As
17. Element Symbol: BARIUM: Ba
18. Element Symbol: BERYLLIUM: Be
19. Element Symbol: BISMUTH: Bi
20. Element Symbol: BORON: B
