Question

Report Date 01- 31- 20 Section Chem is 1. Write each number in scientific notation. 10cm a the average height of adult 182.88 cm b. speed of light 186,282 m/s c. length of X rays 0.000 000 009 m d. one pound of water contains 3892000 L 2. Convert these numbers to decimal format. a. 1.36 x 10' g/cm b. 4.39 x 10-7 mm c. 45.4 x 10g d. 1.760 x 10'yd 3. Perform the following calculations then write your answer in scientific notation. a. (1.2 x 10 ) x (6.7 * 10) = b. (3.7 * 10%)/(7.7 * 10 ) = _ 4. Find the log or antilog for these numbers. a. log 6.7 * 10 = b. log 9.8 x 10 = c. antilog 0.0205 = d. antilog 7.6 x 10-7-

Answer 1

1. In scientific notation only one digit is written left to decimal point .If we have to move left to get one digit before decimal then as much points we move left , same raise the power of 10 in positive is raised and if to move right then same raise the power of 10 in -ve is raised.

a). 182.88 cm = 1.83×10^2 cm

b). 186282 m/s = 1.86 × 10^5 m/s

c). 0.000000009 m = 9.0 × 10^-9 m

d). 3892000 uL = 3.89 ×10^6 uL .