AtomicNumberMassNumberAtomSymbolProtonsNeutronsFr87223Tungsten11023886136574480. You are given a bag of coins that contains 70% dimes and30% nickels. What is the average value of the coins in thebag?82. Indium exists as two isotopes. The first has 49 protons and64 neutrons. The second has 49 protons and 66 neutrons.Write an atomic symbol for each of these isotopes, includ- truck has a mass of 4,813 kilograms. Which measurementhas more significant digits? Which measurement is moreprecise?40. This graduated cylinder shows avolume that is more than 5 mLbut less than 6 mL. How preciselycan you estimate this volume?Report the volume to the correctnumber of significant digits.Le42. Identify the number of significant digits in the followingmeasured values:

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Atomic Number Mass Number Atom Symbol Protons Neutrons Fr 87 223 Tungsten 110 238 86 136 57 44

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter1: Introduction To Chemistry

Section: Chapter Questions

Problem 1.48PAE: 1.48 A rock is placed on a balance and its mass is determined as 12.1 g. When the rock is then...

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Question

Atomic
Number
Mass
Number
Atom
Symbol
Protons
Neutrons
Fr
87
223
Tungsten
110
238
86
136
57
44
80. You are given a bag of coins that contains 70% dimes and
30% nickels. What is the average value of the coins in the
bag?
82. Indium exists as two isotopes. The first has 49 protons and
64 neutrons. The second has 49 protons and 66 neutrons.
Write an atomic symbol for each of these isotopes, includ-

truck has a mass of 4,813 kilograms. Which measurement
has more significant digits? Which measurement is more
precise?
40. This graduated cylinder shows a
volume that is more than 5 mL
but less than 6 mL. How precisely
can you estimate this volume?
Report the volume to the correct
number of significant digits.
Le
42. Identify the number of significant digits in the following
measured values:

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