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Chapter 1: Problem 21

Express these numbers in scientific notation: (a) 0.000000027 , (b) 356 (c) 0.096 .

Short Answer

Expert verified
(a) \(2.7 \times 10^{-8}\) (b) \(3.56 \times 10^2\) (c) \(9.6 \times 10^{-1}\)

Step by step solution

01

Expression of 0.000000027 in Scientific Notation

Move the decimal 8 places to the right to get 2.7, which gives \(2.7 \times 10^{-8}\).
02

Expression of 356 in Scientific Notation

Move the decimal 2 places to the left to get 3.56, which gives \(3.56 \times 10^2\).
03

Expression of 0.096 in Scientific Notation

Move the decimal 1 place to the right to get 9.6, which gives \(9.6 \times 10^{-1}\).

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Most popular questions from this chapter

A bank teller is asked to assemble "one-dollar" sets of coins for his clients. Each set is made of three quarters, one nickel, and two dimes. The masses of the coins are: quarter: \(5.645 \mathrm{~g}\); nickel: \(4.967 \mathrm{~g}\); dime: \(2.316 \mathrm{~g}\). What is the maximum number of sets that can be assembled from \(33.871 \mathrm{~kg}\) of quarters, \(10.432 \mathrm{~kg}\) of nickels, and \(7.990 \mathrm{~kg}\) of dimes? What is the total mass (in g) of this collection of coins?

Does each of these describe a physical change or a chemical change? (a) The helium gas inside a balloon tends to leak out after a few hours. (b) A flashlight beam slowly gets dimmer and finally goes out. (c) Frozen orange juice is reconstituted by adding water to it. (d) The growth of plants depends on the sun's energy in a process called photosynthesis. (e) A spoonful of table salt dissolves in a bowl of soup.

A lead sphere has a mass of \(1.20 \times 10^{4} \mathrm{~g},\) and its volume is \(1.05 \times 10^{3} \mathrm{~cm}^{3}\). Calculate the density of lead.

Express these numbers in scientific notation: (a) 0.749 ,( b) \(802.6,\) (c) 0.000000621 .

What is the difference between a physical property and a chemical property?
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