CHEM 1021 Lecture Notes - Lecture 7: Corn Syrup, Dimensional Analysis, International System Of Units
Document Summary
Ex: a small tree is 68 inches high. Find its height in feet, centimeters and meters. (2. 54 cm = 1 in, 12 in = 68 in / 12 in = 5. 7 ft. 68 in * 2. 54 cm = 173 cm --> 170 cm --> 1. 7 x 10^2 cm. 68 in * 2. 54 cm 170 cm / 100 m = 1. 7 m. Temperature: measurement of how hot or cold something is relative to a standard. Metric scales: celsius c, kelvin k, fahrenheit f. Temp in kelvin = c + 273. 15 ---> exact number. Temp in fahrenheit = 1. 8 c +32 (will be given on exam) Temp change of 1-degree f is the same as 1-degree change of kelvin. 40 + 273. 15 = 313. 15 k ---> rounded to 313k. Kelvin: 23. 8889 + 273. 15 = 297. 0389 ---> 297 k. Mass of the object divided by the volume. Least dense - diet coke because it floats on the water.
