CHEM 1210 Lecture Notes - Lecture 1: Decimal Mark, Aspirin, Boiling Point
Document Summary
In scientific notation, a number is written as: Coefficient: a number between 1 and 10. Exponent: any positive or negative whole number. Move the decimal point to give a number between 1 and 10. Multiply the result by 10x, where x = number of places the decimal was moved. 3. 6 x 10-2: using the factor-label method. Conversion factor: a term that converts a quantity in one unit to a quantity in another unit. Original quantity x conversion factor = desired quantity. Conversion factors are usually written as equalities. To use them, they must be written as fractions. Factor-label method: using conversion factors to convert a quantity in one unit to a quantity in another unit. The bottom conversion factor has the original unit in the denominator. Identify the original quantity and the desired quantity, including units. Write out the conversion factors needed to solve the problem. Write the answer with the correct number of sig figs.
