Lab Manual Experiments in General Chemistry
11th Edition
ISBN: 9781305944985
Author: Darrell Ebbing, Steven D. Gammon
Publisher: Cengage Learning
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Chapter 1, Problem 1.8QP
Interpretation Introduction
Interpretation:
A substance has to be chosen and its physical, chemical properties has to be given.
Concept Introduction:
Physical properties of a material is that which can be observed without changing the chemical composition. Chemical properties of a material is the one which involves chemical change.
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111
States of Matter
Understanding conceptual components of the enthalpy of solution
0/5
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A small amount of acetonitrile (CH, CN) is dissolved in a large amount of water. Imagine separating this process into the four stages sketched below. (These
sketches show only a portion of the substances, so you can see the density and distribution of atoms and molecules in them.)
CH,CN
H₂O
B
88
C
Use these sketches to answer the questions in the table below.
The enthalpy of solution AH is negative
soln
when CH3CN dissolves in water. Use this
information to list the stages in order of increasing
enthalpy.
Would heat be absorbed or released if the system
moved from Stage C to D?
What force would oppose or favor the system
moving from Stage C to D? Check all that apply.
1
absorbed
O released
neither absorbed nor released.
none
O ionic bonding force
covalent bonding force…
In a system with an anodic overpotential, the variation of ŋ as a function of
the current density:
1. at low fields is linear 2. at higher fields, it follows Tafel's law
Find the range of current densities for which the overpotential has the same
value as when calculated for cases 1 and 2 (maximum relative difference of
5% with respect to the behavior for higher fields). To which overpotential
range does this correspond?
Data: 10 = 1.5 mA cm², T = 300°C, ẞ = 0.64, R = 8.314 J K 1 mol¹ and F = 96485
C mol-1.
Indicate 10.6 with only one significant figure.
Chapter 1 Solutions
Lab Manual Experiments in General Chemistry
Ch. 1.3 - You place 1.85 grams of wood in a vessel with 9.45...Ch. 1.4 - Potassium is a soft, silvery-colored metal that...Ch. 1.4 - Matter can be represented as being composed of...Ch. 1.5 - Give answers to the following arithmetic setups....Ch. 1.5 - a. When you report your weight to someone, how...Ch. 1.6 - Express the following quantities using an SI...Ch. 1.6 - a. A person with a fever has a temperature of...Ch. 1.6 - Prob. 1.3CCCh. 1.7 - A piece of metal wire has a volume of 20.2 cm3 and...Ch. 1.7 - Ethanol (grain alcohol) has a density of 0.789...
Ch. 1.7 - You are working in the office of a precious metals...Ch. 1.8 - The oxygen molecule (the smallest particle of...Ch. 1.8 - A large crystal is constructed by stacking small,...Ch. 1.8 - Using the definitions 1 in. = 2.54 cm and 1 yd =...Ch. 1 - Discuss some ways in which chemistry has changed...Ch. 1 - Define the terms experiment and theory. How are...Ch. 1 - Illustrate the steps in the scientific method...Ch. 1 - Define the terms matter and mass. What is the...Ch. 1 - Prob. 1.5QPCh. 1 - Prob. 1.6QPCh. 1 - Characterize gases, liquids, and solids in terms...Ch. 1 - Prob. 1.8QPCh. 1 - Give examples of an element, a compound, a...Ch. 1 - What phases or states of matter are present in a...Ch. 1 - What distinguishes an element from a compound? Can...Ch. 1 - Prob. 1.12QPCh. 1 - Prob. 1.13QPCh. 1 - Prob. 1.14QPCh. 1 - How does the International System (SI) obtain...Ch. 1 - Prob. 1.16QPCh. 1 - Prob. 1.17QPCh. 1 - Why should units be carried along with numbers in...Ch. 1 - When the quantity 12.9 g is added to 2 1002 g,...Ch. 1 - Prob. 1.20QPCh. 1 - A 75.0-g sample of a pure liquid, liquid A, with a...Ch. 1 - Which of the following represents the smallest...Ch. 1 - Physical and Chemical Changes Say you are...Ch. 1 - a Sodium metal is partially melted. What are the...Ch. 1 - A material is believed to be a compound. Suppose...Ch. 1 - You need a thermometer that is accurate to 5C to...Ch. 1 - Imagine that you get the chance to shoot five...Ch. 1 - Say you live in a climate where the temperature...Ch. 1 - You are presented with a piece of metal in a jar....Ch. 1 - You have two identical boxes with interior...Ch. 1 - Consider the following compounds and their...Ch. 1 - Which of the following items have a mass of about...Ch. 1 - What is the length of the nail reported to the...Ch. 1 - For these questions, be sure to apply the rules...Ch. 1 - You are teaching a class of second graders some...Ch. 1 - A 15.5 g sample of sodium carbonate is added to a...Ch. 1 - Some iron wire weighing 5.6 g is placed in a...Ch. 1 - Zinc metal reacts with yellow crystals of sulfur...Ch. 1 - Aluminum metal reacts with bromine, a red-brown...Ch. 1 - Give the normal state (solid, liquid, or gas) of...Ch. 1 - Give the normal state (solid, liquid, or gas) of...Ch. 1 - Which of the following are physical changes and...Ch. 1 - For each of the following, decide whether a...Ch. 1 - A sample of mercury(II) oxide was heated to...Ch. 1 - Solid iodine, contaminated with salt, was heated...Ch. 1 - The following are properties of substances. Decide...Ch. 1 - Decide whether each of the following is a physical...Ch. 1 - Iodine is a solid having somewhat lustrous,...Ch. 1 - Mercury(II) oxide is an orange-red solid with a...Ch. 1 - Consider the following separations of materials....Ch. 1 - All of the following processes involve a...Ch. 1 - Label each of the following as a substance, a...Ch. 1 - Indicate whether each of the following materials...Ch. 1 - Which of the following are pure substances and...Ch. 1 - Which of the following are pure substances and...Ch. 1 - How many significant figures are there in each of...Ch. 1 - How many significant figures are there in each of...Ch. 1 - The circumference of the earth at the equator is...Ch. 1 - The astronomical unit equals the mean distance...Ch. 1 - Assuming all numbers are measured quantities, do...Ch. 1 - Assuming all numbers are measured quantities, do...Ch. 1 - Prob. 1.63QPCh. 1 - Prob. 1.64QPCh. 1 - Write the following measurements, without...Ch. 1 - Write the following measurements, without...Ch. 1 - Using scientific notation, convert: a 6.15 ps to s...Ch. 1 - Using scientific notation, convert: a 6.20 km to m...Ch. 1 - Convert: a 68F to degrees Celsius b 23F to degrees...Ch. 1 - Convert: a 51F to degrees Celsius b 11F to degrees...Ch. 1 - Salt and ice are stirred together to give a...Ch. 1 - Prob. 1.72QPCh. 1 - A certain sample of the mineral galena (lead...Ch. 1 - A flask contains a 30.0 mL sample of acetone (nail...Ch. 1 - A liquid with a volume of 8.5 mL has a mass of...Ch. 1 - Prob. 1.76QPCh. 1 - Platinum has a density of 21.4 g/cm3. 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Note...Ch. 1 - Prob. 1.88QPCh. 1 - The first measurement of sea depth was made in...Ch. 1 - The estimated amount of recoverable oil from the...Ch. 1 - A fish tank is 24.2 in. long, 15.9 in. deep, and...Ch. 1 - The population density of worms in a particular...Ch. 1 - Prob. 1.93QPCh. 1 - An antacid tablet weighing 0.853 g contained...Ch. 1 - When a mixture of aluminum powder and iron(III)...Ch. 1 - When chlorine gas is bubbled into a solution of...Ch. 1 - A beaker weighed 50.90 g. To the beaker was added...Ch. 1 - Prob. 1.98QPCh. 1 - Describe each of the following as a physical or...Ch. 1 - Describe each of the following as a physical or...Ch. 1 - Analyses of several samples of a material...Ch. 1 - A red-orange solid contains only mercury and...Ch. 1 - A cubic box measures 39.3 cm on an edge. 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It forms a...Ch. 1 - An aluminum alloy used in the construction of...Ch. 1 - Vanadium metal is added to steel to impart...Ch. 1 - The density of quartz mineral was determined by...Ch. 1 - Prob. 1.126QPCh. 1 - Some bottles of colorless liquids were being...Ch. 1 - Providing no reaction occurs, a solid will float...Ch. 1 - Platinum metal is used in jewelry; it is also used...Ch. 1 - Ultrapure silicon is used to make solid-state...Ch. 1 - Vinegar contains acetic acid (about 5% by mass)....Ch. 1 - Ethyl acetate has a characteristic fruity odor and...Ch. 1 - Prob. 1.133QPCh. 1 - Prob. 1.134QPCh. 1 - Convert; a 5.91 kg of chrome yellow to milligrams...Ch. 1 - Convert: a 7.19 g of cyanocobalamin (vitamin B12)...Ch. 1 - The largest of the Great Lakes is Lake Superior,...Ch. 1 - The average flow of the Niagara River is 3.50 km3...Ch. 1 - A room measures 10.0 ft 11.0 ft and is 9.0 ft...Ch. 1 - Prob. 1.140QPCh. 1 - The masses of diamonds and gems are measured in...Ch. 1 - One year of world production of gold was 49.6 106...Ch. 1 - Prob. 1.143QPCh. 1 - All good experiments start with a scientific...Ch. 1 - Prob. 1.145QPCh. 1 - Prob. 1.146QPCh. 1 - Prob. 1.147QPCh. 1 - A 33.0-g sample of an unknown liquid at 20.0C is...Ch. 1 - A 124-g sample of a pure liquid, liquid A, with a...Ch. 1 - On a long trip you travel 832 miles in 21 hours....Ch. 1 - The density of lead at 20C is 11.3 g/cm3. Rank the...Ch. 1 - Prob. 1.152QPCh. 1 - Prob. 1.153QPCh. 1 - The density of liquid water at 80C is 972 kg/m3...Ch. 1 - Prob. 1.155QPCh. 1 - At 20C liquid gasoline gas has a density of 0.75...Ch. 1 - The figures below represent a gas trapped in...Ch. 1 - An ice cube measures 3.50 cm on each edge and...Ch. 1 - The total length of all the DNA molecules...Ch. 1 - Prospectors are considering searching for gold on...Ch. 1 - A solution is prepared by dissolving table salt,...Ch. 1 - Water and saline (salt) solution have in common...Ch. 1 - When 11.1 g of marble chips (calcium carbonate) is...Ch. 1 - Zinc ore (zinc sulfide) is treated with sulfuric...Ch. 1 - A steel sphere has a radius of 1.58 in. If this...Ch. 1 - A weather balloon filled with helium has a...Ch. 1 - Prob. 1.167QPCh. 1 - Prob. 1.168QPCh. 1 - A sample of an ethanolwater solution has a volume...Ch. 1 - You have a piece of gold jewelry weighing 9.35 g....Ch. 1 - A sample of vermilion-colored mineral was weighed...Ch. 1 - A sample of a bright blue mineral was weighed in...Ch. 1 - Prob. 1.173QPCh. 1 - An experimenter places a piece of a solid metal...Ch. 1 - Prob. 1.175QPCh. 1 - The expected outcome for the amount of sugar in a...
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