Entering scientific notation on a calculator It is important, especially for exams, that you be able to enter scientific notation in your calculator. All calculators are different, but look for a button such as E, EE, or EXP. If this button exists on your calculator, it means "times ten to the" and so you never actually type the number 10. For example, 2.998Ã108 could be entered on a calculator as 2.998 E 8 For entering negative exponents, some calculators require the sign to be entered after the exponent. For example, 5.09Ã10?6 might be entered on a calculator as 5.09 E -6 or as 5.09 E 6- Also note that many calculators have a "change sign" button (+/-) that should be used for exponents instead of the ? button that indicates subtraction. When a number is written as 103, it means 1Ã103 and therefore on a calculator 103 could be entered as 1 E 3 Finally, you may need to put your calculator into scientific or exponential mode. This can often be done by pressing 2nd SCI on your calculator after computing an answer. There are calculators, such as dedicated graphing calculators, that will have buttons such as 10x . Sometimes this function is listed as the inverse of the log function, and you will need to hit shift + log to access the exponent template. You will need to look at your specific calculator to verify how to enter scientific notation. Part B Use your calculator to determine the answer to the following calculation: 1.0Ã10^?154.2Ã10^?7 Express the answer in MasteringChemistry format using two significant figures.
Entering scientific notation on a calculator It is important, especially for exams, that you be able to enter scientific notation in your calculator. All calculators are different, but look for a button such as E, EE, or EXP. If this button exists on your calculator, it means "times ten to the" and so you never actually type the number 10. For example, 2.998Ã108 could be entered on a calculator as 2.998 E 8 For entering negative exponents, some calculators require the sign to be entered after the exponent. For example, 5.09Ã10?6 might be entered on a calculator as 5.09 E -6 or as 5.09 E 6- Also note that many calculators have a "change sign" button (+/-) that should be used for exponents instead of the ? button that indicates subtraction. When a number is written as 103, it means 1Ã103 and therefore on a calculator 103 could be entered as 1 E 3 Finally, you may need to put your calculator into scientific or exponential mode. This can often be done by pressing 2nd SCI on your calculator after computing an answer. There are calculators, such as dedicated graphing calculators, that will have buttons such as 10x . Sometimes this function is listed as the inverse of the log function, and you will need to hit shift + log to access the exponent template. You will need to look at your specific calculator to verify how to enter scientific notation. Part B Use your calculator to determine the answer to the following calculation: 1.0Ã10^?154.2Ã10^?7 Express the answer in MasteringChemistry format using two significant figures.
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