![]() ![]() (See Figure 2.2 "Scientific Notation on a Calculator". If in doubt, consult your instructor immediately. Different models of calculators require different actions for properly entering scientific notation. Be sure you know how to correctly enter a number in scientific notation into your calculator. When two exponential expressions having the same non zero base and different powers are multiplied, then their powers are added over the same base. When performing calculations, you may have to enter a number in scientific notation into a calculator. Many quantities in chemistry are expressed in scientific notation. This number is positive if you move the decimal point to the right and negative if you move the decimal point to the left: 5 6 ↖ 4, 9 ↖ 3 0 ↖ 2 0 ↖ 1 = 5.69 × 10 4 0. The number of places equals the power of 10. In scientific notation, the number is written as 5.59 × 10 −7.Īnother way to determine the power of 10 in scientific notation is to count the number of places you need to move the decimal point to get a numerical value between 1 and 10. Note that we omit the zeros at the end of the original number. In scientific notation, the number is written as 2.76 × 10 6. In scientific notation, the number is 8.84 × 10 −3. In scientific notation, the number is 3.06 × 10 5. (See Figure 2.1 "Using Scientific Notation".)Įxpress these numbers in scientific notation. Typically, the extra zero digits at the end or the beginning of a number are not included. For small numbers, the same process is used, but the exponent for the power of 10 is negative: 0.000411 = 4.11 × 1/10,000 = 4.11 × 10 −4 Thus, the number in scientific notation is 7.9345 × 10 4. Then determine the power of 10 needed to make that number into the original number and multiply the written number by the proper power of 10. ![]() The part of a number in scientific notation that is multiplied by a power of 10 is called the coefficient The part of a number in scientific notation that is multiplied by a power of 10. A negative exponent implies a decimal number less than one.Ī number is expressed in scientific notation by writing the first nonzero digit, then a decimal point, and then the rest of the digits. Again, the value of the exponent is equal to the number of zeros in the denominator of the associated fraction. ![]()
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