1. U NIT 8: M EASUREMENTS AND C ALCULATIONS IN CHEMISTRY - D IMENSIONAL A NALYSIS II, MORE COMPLEX PROBLEMS Dr. Chin Chu Chemistry River Dell High School

2. 1. Convert 124.56 Gm to pm (1.2456 x 10 14 nm) 2. Convert 3.45 x 10 -2 mg to kg (3.45 x 10 -8 kg) 3. Convert 6.57 x 10 4 ML to nL (6.57 x 10 19 nL) 4. Convert 34.65 oz to pounds (1 pound = 16 oz) (2.166 pounds) 5. Convert 3567 miles to cm (1mile = 1.6 km; 1 km = 10 3 m) (5.707 x 10 8 cm) D IMENSIONAL A NALYSIS - A NSWERS

3. Convert 34.65 oz to pounds (1 pound = 16 oz) D IMENSIONAL A NALYSIS

4. Convert 3567 miles to cm (1mile = 1.6km; 1km = 10 3 m, 1cm = 10 -2 m) D IMENSIONAL A NALYSIS

5. A pair of gloves costs $3.50. How many pairs of gloves can one buy with $91? D IMENSIONAL A NALYSIS

6. How many bagels are there in 3 dozens? How many pairs of gloves one can get from 1140 individual gloves assuming proper left-right hand match can be found. D IMENSIONAL A NALYSIS

7. 1. How many pounds of table salt are there in 2.34 x 10 -3 oz? (1 pound = 16 oz) [1.46 x 10 -4 pounds] 2. How many microseconds are there in 3.4 x 10 4 minutes? (1 min. = 60 s) [2.04 x 10 12  s] 3. How many mL are there in 3.6 fluid oz? (1 US fl. oz. = 0.02957 L) [1.1 x 10 1 mL] 4. How many km are there in 14.7 inches? (1 in. = 2.54 cm) [3.73 x 10 -4 km] D IMENSIONAL A NALYSIS - E XERCISE

8. 5. How many milligrams of table salt are there in 2 pounds? (1 pound = 16 oz; 1 oz = 28.35 g) [9.07 x 10 5 mg] 6. How many microseconds are there in 1.5 years? (1 year 365 days) [3.73 x 10 13  s] 7. A dozen roses costs $17. How many dollars has one have to spent for 48 roses? [$68] D IMENSIONAL A NALYSIS - E XERCISE