Dimensional Analysis Formative Assessment 2

Linear Measure
2.54 cm	=	1 in
12 in	=	1 ft
5280 ft	=	1 mi
0.3048 m	=	1 ft
1 km	=	0.621 mi
1 furlong	=	660 ft
3 ft	=	1 yd
0.0394 in	=	1 mm

Weight/Mass
1 stone	=	14 lbs
1 lb	=	0.4536 kg
1 oz	=	16 drams
1 oz	=	28.3 g
16 oz	=	1 lb
2,000 lbs	=	1 ton
1 oz	=	28,350 mg
1 carat	=	0.2 g

Volumetric Measure
1 cup	=	16 tablespoons
2 cups	=	1 pint
2 pints	=	1 quart
1 gal	=	4 quarts
1 gal	=	3.78 L
1 mL	=	1 cm³
1 m³	=	1000 L
1 cup	=	236.6 mL

Time
1,000 ms	=	1 s
60 s	=	1 min
60 min	=	1 hr
24 hr	=	1 day
365 day	=	1 yr
14 days	=	1 fortnight
10 yr	=	1 decade
100 yr	=	1 century

Instructions

You may print this sheet, if you wish, but it is not necessary. Please show work carefully and clearly put a box around the final result of your calculation. This means that every conversion factor must be shown and you must show the units that cancel out. Scan your work and submit it as a PDF. Problems will be scored out of a total of 10 points each. Your score will be 70 plus however many points you earn. The bonus question is worth 5 extra points and it is permitted to earn up to 105.

There are two parts:
1. Give the sum of 9 lb 10 oz plus 4 lb 8 oz
2. Give the result of that sum in decimal pounds
Bonus: What is the number of decimal hours in 3 hrs 20 min 15 sec?

Did you remember to show your work properly? The point of this lesson is not the correct answer, which you could Google anyway. The point is to learn the skill of unit conversion, which is an important one throughout your chemistry course.