SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How many sig figs are there?27000000
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2
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5
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8
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None of the above
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Explanation:
Detailed explanation-1: -27000 has 2 sig figs. Trailing zeros to the right of a decimal point are significant.
Detailed explanation-2: -Zeros before the decimal place only count if the decimal place is included in the number. For example, the number 2700. has 4 significant figures, but the number 2700 only has 2. If it is unclear how many significant figures a number has, the number should be written using scientific notation or SI prefixes.
Detailed explanation-3: -figs. Rounding 1, 000, 000 to 3 sig. figs. 100 to 2 sig.
Detailed explanation-4: -figs. (160) 20000 has 1 sig. figs (20000) 704 has 3 sig.
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