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Chapter 2: Problem 81
What is the base SI unit of length? What is the SI unit of yolume?
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If 1 U.S. dollar is worth \(1.54\) Canadian dollars, how many U.S. dollars are needed to purchase an item that costs 350 Canadian dollars?
Solve the equation \(5 x-6=3 x-8\) (find the value of \(x\) that makes this equation true).
The mass of an average neon atom is \(20.2\) atomic mass units (amu), where 1 amu \(=1.66 \times 10^{-24} \mathrm{~g}\). (a) What is the mass in atomic mass units of 20 neon atoms? (b) What is the mass in grams of 20 neon atoms? (c) What is the mass in grams of \(6.022 \times 10^{23}\) neon atoms?
A student reports a series of five length measurements that are accurate but not precise. Is it more likely that his laboratory technique is very good but the measuring instrument is bad, or that his laboratory technique is bad? Explain.
Indicate the number of significant figures in: (a) \(0.503200 \mathrm{~mL}\) (b) \(2000 \pm 5\) (c) \(2000 \pm 50\) (d) \(2000 \pm 0.5\) (e) \(200.1\)
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