Module 1: CHEM103 / CHEM 103 (Latest
Update ) General Chemistry I with
Lab | Questions & Answers | Grade A | 100%
Correct. Portage Learning
1. 1.1 EXPONENTIAL NUMBERS: The speed of light is 186,000 miles per
second. This is 1.86 x 105 (in exponential form)
The diameter of an E. coli cell is 0.00000080 meters = 8.0 x 10-7 (in
exponential form)
4950000000. A number larger than one will have a positive exponent. Move
the decimal point nine places to the left to give 4.95 x 109
0.00000000000056 A number smaller than one will have a negative exponent.
Move the decimal point 13 places to the right to give 5.6 x 10-13
1.) 0.00000456 = smaller than 1 = negative exponent, move decimal 6 places
= 4.56 x 10-6
,2.) 2.63 x 107 = positive exponent = larger than 1, move decimal 7 places =
26300000.
3.) 7800000. = larger than 1 = positive exponent, move decimal 6 places = 7.8
x 106
4.) 8.26 x 10-5 = negative exponent = smaller than 1, move decimal 5 places
= 0.0000826
5.) 5.38 x 10-3 = negative exponent = smaller than 1, move decimal 3 places
= 0.00538
6.) 0.000673 = smaller than 1 = negative exponent, move decimal 4 places =
6.73 x 10-4
7.) 3.82 x 104 = positive exponent = larger than 1, move decimal 4 places =
38200.
8.) 623000000. = larger than 1 = positive exponent, move decimal 8 places =
6.23 X 108
, 2. 1.2: METRIC SYSTEM - UNIT CONVERSIONS: 1 foot (ft)=12 inches
(in)
1 kilogram (kg)=1000 grams (g)
1 pound (lb)=16 ounces (oz)
1 gallon (gal)=4 quarts (qt)
1000 milliliters (ml)=1 liter (L)
100 centigrams (cg)=1 gram (g)
10 decimeters (dm)=1 meter (m)
3. The prefixes kilo (= 1000), milli (= 1/1000), centi (= 1/100), and deci
(= 1/10): are used with any metric unit, such as grams (weight), liters
(volume), and meters (distance).
4. The original quantity and unit (to be converted) are multiplied by a
conversion factor (which is a fraction made up as follows):
New unit (on top) / Old unit (on bottom): 48 ounces = ?
pounds 48 o z × 1 p o u n d / 16 o z = 3 p o u n d s
4 kilograms = ? grams
4 Kg X 1000 grams/1kg = 4000 grams
Update ) General Chemistry I with
Lab | Questions & Answers | Grade A | 100%
Correct. Portage Learning
1. 1.1 EXPONENTIAL NUMBERS: The speed of light is 186,000 miles per
second. This is 1.86 x 105 (in exponential form)
The diameter of an E. coli cell is 0.00000080 meters = 8.0 x 10-7 (in
exponential form)
4950000000. A number larger than one will have a positive exponent. Move
the decimal point nine places to the left to give 4.95 x 109
0.00000000000056 A number smaller than one will have a negative exponent.
Move the decimal point 13 places to the right to give 5.6 x 10-13
1.) 0.00000456 = smaller than 1 = negative exponent, move decimal 6 places
= 4.56 x 10-6
,2.) 2.63 x 107 = positive exponent = larger than 1, move decimal 7 places =
26300000.
3.) 7800000. = larger than 1 = positive exponent, move decimal 6 places = 7.8
x 106
4.) 8.26 x 10-5 = negative exponent = smaller than 1, move decimal 5 places
= 0.0000826
5.) 5.38 x 10-3 = negative exponent = smaller than 1, move decimal 3 places
= 0.00538
6.) 0.000673 = smaller than 1 = negative exponent, move decimal 4 places =
6.73 x 10-4
7.) 3.82 x 104 = positive exponent = larger than 1, move decimal 4 places =
38200.
8.) 623000000. = larger than 1 = positive exponent, move decimal 8 places =
6.23 X 108
, 2. 1.2: METRIC SYSTEM - UNIT CONVERSIONS: 1 foot (ft)=12 inches
(in)
1 kilogram (kg)=1000 grams (g)
1 pound (lb)=16 ounces (oz)
1 gallon (gal)=4 quarts (qt)
1000 milliliters (ml)=1 liter (L)
100 centigrams (cg)=1 gram (g)
10 decimeters (dm)=1 meter (m)
3. The prefixes kilo (= 1000), milli (= 1/1000), centi (= 1/100), and deci
(= 1/10): are used with any metric unit, such as grams (weight), liters
(volume), and meters (distance).
4. The original quantity and unit (to be converted) are multiplied by a
conversion factor (which is a fraction made up as follows):
New unit (on top) / Old unit (on bottom): 48 ounces = ?
pounds 48 o z × 1 p o u n d / 16 o z = 3 p o u n d s
4 kilograms = ? grams
4 Kg X 1000 grams/1kg = 4000 grams
