4. Express 142.8315 correct to a) 1 decimal places : \( \qquad \) b) nearest whole number: \( \qquad \) c) the nearest hundredth : \( \qquad \) d) 4 significant figures. \( \qquad \)
Added by Jose Miguel B.
Close
Step 1
8315 to 1 decimal place, we look at the second decimal digit. If it's 5 or more, we round up. If it's less than 5, we round down. Here, the second decimal digit is 3, so we round down. The answer is 142.8. Show more…
Show all steps
Your feedback will help us improve your experience
Shveta Prithiani and 72 other Chemistry 101 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Round each number to four significant figures. (a) 255.98612 (b) 0.0004893222 (c) $2.900856 \times 10^{-4}$ (d) 2,231,479
Round each number to four significant figures. \begin{equation}\begin{array}{lllllll}{\text { a. } 156.852} & {\text { b. } 156.842} & {\text { c. } 156.849} & {\text { d. } 156.899}\end{array}\end{equation}
Round each of the following numbers to four significant figures and express the result in standard exponential notation: (a) $102.53070,$ (b) $656.980,$ (c) 0.008543210 ,(d) $0.000257870 (\mathbf{e})-0.0357202$
Christopher N.
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Watch the video solution with this free unlock.
EMAIL
PASSWORD