Carry out the following conversions using the factor-label method. Show all of your work !
2a. How many seconds are in a year?
2b. Convert 28km to cm
2c. Convert 45kg to mg
2d. Convert 85cm/min to m/s
2e. Convert the speed of light, 3x10^8 to km/day
2f. Convert 823nm to m
2g. 8.5cm^3 to m^3