Problem 46E

Classify each property as physical or chemical.

a. the boiling point of ethyl alcohol

b. the temperature 3t which dry ice evaporates

c. the tendency of iron to rust

d. the color of gold

Solution 46E: (a) Conversion from m to mm The conversion factor needed to convert m to mm are given below (i) m to m -6 1 m = 10 m = (1 m x 10 m)/1 m (ii) m to mm 1 m = 1000 mm = 1m x 1000mm 1m Therefore, 1 m = (1 m x 10 m)/1 m x 1000mm = 1 x 10 mm 1m Thus, 1 m is equal to 1 x 10 mm -3 (b) ms to ns, The conversion factor needed to convert ms to ns are given below -3 1 ms = 10 s 1 ns = 1x 10 s-9 -9 Thus 1 s = 1 ns /1x 10 Therefore, 1 ms = 1 ms x 1 x103 x 1 ns = 1 x 10 ns 1 ms 1 x 109 s Therefore 1 millisec = 1 x 10 ns 6 (c) mi to km, The conversion factor needed to convert mi to km are given below 1 mi = 1.6093 km 1.6093 km Desired unit = 1 mi x 1 mi 1 mile = 1.6093 km (d) ft to L. The conversion factor needed to convert ft to L. are given below We know 3 1.0 ft = 28.317 L Desired unit = Given unit x desired unit/given unit = 1.0 ft x 28.317 L 1.0 ft3 = 28.317 L Therefore , 1.0 ft3 is equal to 28.317 L