Chapter 1: Q1.6CYL (page 41)
What is the density of a liquid with a mass of 31.1415 g and a volume of 30.13 cm³?
Short Answer
Density =1.034 (round four significant figures, Three decimal places)
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Chapter 1: Q1.6CYL (page 41)
What is the density of a liquid with a mass of 31.1415 g and a volume of 30.13 cm³?
Density =1.034 (round four significant figures, Three decimal places)
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Question: A chemist’s 50-Trillion Angstrom Run (see Exercise 1.78) would be an archeologist’s 10,900 cubit run. Howlong is one cubit in meters and in feet? (1 Å = 1 × 10-8 cm)
Perform the following calculations and report each answer with the correct number of significant figures.
(a) 62.8 × 34
(b) 0.147 + 0.0066 + 0.012
(c) 38 × 95 × 1.792
(d) 15 – 0.15 – 0.6155
(e) 8.78 × (0.0500/ 0.478)
(f) 140 + 7.68 + 0.014
(g) 28.7 – 0.0483
(h) (88.5 − 87.57)/ 45.13
Convert the temperature of dry ice, \( - 77{\rm{ }}^\circ C,\) into degrees Fahrenheit and kelvin.
Question: Make the conversion indicated in each of the following:
(a) the length of a soccer field, 120 m (three significant figures), to feet
(b) the height of Mt. Kilimanjaro, at 19,565 ft the highest mountain in Africa, to kilometers
(c) the area of an 8.5 × 11-inch sheet of paper in cm2
(d) the displacement volume of an automobile engine, 161 in.3, to liters
(e) the estimated mass of the atmosphere, 5.6 × 1015 tons, to kilograms
(f) the mass of a bushel of rye, 32.0 lb, to kilograms
(g) the mass of a 5.00-grain aspirin tablet to milligrams (1 grain = 0.00229 oz)
Which molecule has a molecular mass of 28.05 amu?
(a) \({\rm{HC}} \equiv {\rm{CH}}\)
(b)

(c)

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