CHMB16H3 Chapter 4: CHMB16 Chapter 4
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Interpolation: estimate all readings to the nearest tenth of the distance between scale divisions (on a 50-ml burette, which is graduated to. 0. 1-ml, read the level to the nearest 0. 01-ml). Example: 18. 9984032 + 18. 9984032 + 83. 798 = 121. 795, since. 83. 798 only has 3 numbers after the decimal point and rounding of the final answer. If the first insignificant figure is below 5, we round the number down. In the addition or subtraction of numbers expressed in scientific notation, all numbers should first be expressed with the same exponent. Example: 1. 632 x 10^5 + 4. 107 x 10^3 + 0. 984 x 10^6 . 1. 632 x 10^5 + 0. 04107 x 10^5 + 9. 84 x 10^5 = 11. 51307 x. If n = 10^a, then logn = a. Example: 2 is the logarithm of 100 because 100 = 10^2 and the logarithm of 0. 001 is -3 because 0. 001 = 10^-3. In the equation above, the number n is said to be the antilogarithm of a.
