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Chapter 1: Problem 15

Give the chemical symbol or name for the following elements, as appropriate: (a) helium, (b) platinum, (c) cobalt, (d) tin, (e) silver, (f) \(\mathrm{Sb},(\mathbf{g}) \mathrm{Pb}\) (h) Br, (i) \(V\), \((\mathbf{j}) \mathrm{Hg}\).

Short Answer

Expert verified
(a) He, (b) Pt, (c) Co, (d) Sn, (e) Ag, (f) Antimony, (g) Lead, (h) Bromine, (i) Vanadium, (j) Mercury.

Step by step solution

01

(a) Helium

Helium is an element with the chemical symbol He.
02

(b) Platinum

Platinum is an element with the chemical symbol Pt.
03

(c) Cobalt

Cobalt is an element with the chemical symbol Co.
04

(d) Tin

Tin is an element with the chemical symbol Sn.
05

(e) Silver

Silver is an element with the chemical symbol Ag.
06

(f) Sb

Sb stands for the element Antimony.
07

(g) Pb

Pb stands for the element Lead.
08

(h) Br

Br stands for the element Bromine.
09

(i) V

V stands for the element Vanadium.
10

(j) Hg

Hg stands for the element Mercury.

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Most popular questions from this chapter

Carry out the following conversions: (a) 0.105 in. to \(\mathrm{mm}\), (b) \(0.650 \mathrm{qt}\) to \(\mathrm{mL}\), (c) \(8.75 \mu \mathrm{m} / \mathrm{s}\) to \(\mathrm{km} / \mathrm{hr}\) (d) \(1.955 \mathrm{~m}^{3}\) to \(\mathrm{yd}^{3}(\mathbf{e}) \$ 3.99 / \mathrm{lb}\) to dollars per \(\mathrm{kg}\), (f) \(8.75 \mathrm{lb} / \mathrm{ft}^{3}\) to $\mathrm{g} / \mathrm{mL}$.

(a) A sample of tetrachloroethylene, a liquid used in dry cleaning that is being phased out because of its potential to cause cancer, has a mass of \(40.55 \mathrm{~g}\) and a volume of \(25.0 \mathrm{~mL}\) at $25^{\circ} \mathrm{C}$. What is its density at this temperature? Will tetrachloroethylene float on water? (Materials that are less dense than water will float.) (b) Carbon dioxide \(\left(\mathrm{CO}_{2}\right)\) is a gas at room temperature and pressure. However, carbon dioxide can be put under pressure to become a "supercritical fluid" that is a much safer dry-cleaning agent than tetrachloroethylene. At a certain pressure, the density of supercritical \(\mathrm{CO}_{2}\) is \(0.469 \mathrm{~g} / \mathrm{cm}^{3}\). What is the mass of a \(25.0-\mathrm{mL}\) sample of supercritical \(\mathrm{CO}_{2}\) at this pressure?

Is the use of significant figures in each of the following statements appropriate? (a) The 2005 circulation of National Geographic was \(7,812,564 .\) (b) On July 1, 2005, the population of Cook County, Illinois, was $5,303,683 .(\mathbf{c})\( In the United States, \)0.621 \%$ of the population has the surname Brown. (d) You calculate your grade point average to be \(3.87562 .\)

(a) Three spheres of equal size are composed of aluminum (density $\left.=2.70 \mathrm{~g} / \mathrm{cm}^{3}\right),\( silver \)\left(\right.$ density \(\left.=10.49 \mathrm{~g} / \mathrm{cm}^{3}\right)\) and nickel (density \(\left.=8.90 \mathrm{~g} / \mathrm{cm}^{3}\right) .\) List the spheres from lightest to heaviest. (b) Three cubes of equal mass are composed of gold (density \(=19.32 \mathrm{~g} / \mathrm{cm}^{3}\) ), platinum (density \(\left.=21.45 \mathrm{~g} / \mathrm{cm}^{3}\right),\) and lead \(\left(\right.\) density \(\left.=11.35 \mathrm{~g} / \mathrm{cm}^{3}\right) .\) List the cubes from smallest to largest. [Section 1.5\(]\)

Carry out the following operations and express the answers with the appropriate number of significant numbers. (a) \((6.234+8.72) \times 0.6746\) (b) \(732.1-(892.5 / 8.2)\) (c) $\left[\left(3.696 \times 10^{5}\right)-\left(6.234 \times 10^{3}\right)\right] \times 0.0742$ (d) \(0.006438 \times 108-(8.639+8.52)\)
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