Chapter 1: Problem 40
The density of ammonia gas under certain conditions is \(0.625 \mathrm{~g} / \mathrm{L} .\) Calculate its density in \(\mathrm{g} / \mathrm{cm}^{3}\).
Chapter 1: Problem 40
The density of ammonia gas under certain conditions is \(0.625 \mathrm{~g} / \mathrm{L} .\) Calculate its density in \(\mathrm{g} / \mathrm{cm}^{3}\).
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Get started for freeWhich of these properties are intensive and which are extensive? (a) length, (b) volume, (c) temperature, (d) mass.
Calculate the mass of each of these: (a) a sphere of gold of radius \(10.0 \mathrm{~cm}\) [the volume of a sphere of radius \(r\) is \(V=\left(\frac{4}{3}\right) \pi r^{3} ;\) the density of gold \(\left.=19.3 \mathrm{~g} / \mathrm{cm}^{3}\right]\) (b) a cube of platinum of edge length \(0.040 \mathrm{~mm}\) (the density of platinum \(\left.=21.4 \mathrm{~g} / \mathrm{cm}^{3}\right),\) (c) \(50.0 \mathrm{~mL}\) of ethanol (the density of ethanol \(=0.798 \mathrm{~g} / \mathrm{mL})\)
In the determination of the density of a rectangular metal bar, a student made the following measurements: length, \(8.53 \mathrm{~cm}\); width, \(2.4 \mathrm{~cm}\); height, \(1.0 \mathrm{~cm}\); mass, 52.7064 g. Calculate the density of the metal to the correct number of significant figures.
Express these numbers in scientific notation: (a) 0.749 ,( b) \(802.6,\) (c) 0.000000621 .
Carry out these operations as if they were calculations of experimental results, and express each answer in the correct units and with the correct number of significant figures: (a) \(7.310 \mathrm{~km} \div 5.70 \mathrm{~km}\) (b) \(\left(3.26 \times 10^{-3} \mathrm{mg}\right)-\left(7.88 \times 10^{-5} \mathrm{mg}\right)\) (c) \(\left(4.02 \times 10^{6} \mathrm{dm}\right)+\left(7.74 \times 10^{7} \mathrm{dm}\right)\) (d) \((7.8 \mathrm{~m}-0.34 \mathrm{~m}) /(1.15 \mathrm{~s}+0.82 \mathrm{~s})\)
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