5 Which one of the following the smallest quatity ? A. 0.01g
B. 2mg
C. 100μg
D. 5000 ng

In a system, when potential energy decreases, then entropy also decreases. true false

World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s

Diamond will scratch quartz. true or false