OWLV2 FOR MOORE/STANITSKI'S CHEMISTRY:
5th Edition
ISBN: 9781285460369
Author: STANITSKI
Publisher: Cengage Learning
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Chapter 2, Problem 97QRT
Chalky, white crystals in mineral collections are often labeled borax, which has the molecular formula Na2B4O7 · 10H2O, when actually they are partially dehydrated samples with the molecular formula Na2B4O7 · 5H2O, which is more stable under the storage conditions. Real crystals of borax are colorless and transparent.
- (a) Calculate the percent mass that the mineral has lost when it partially dehydrates.
- (b) Is the percent boron by mass the same in both compounds?
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(1) One of the steps in the commercial process for converting ammonia to nitric acid involves the conversion of ammonia, NH3(g) to nitrous oxide, NO(g).
4 NH3(g ) + 5 O2(g) → 4 NO(g) + 6 H2O(l)
Atomic weights (g/mol): N=14, H=1, O=16
a. Balance the above chemical equation that represents the conversion.
b. How many moles of oxygen are needed to convert 2.5 moles of ammonia?
c. How many grams of water will be produced from 2.5 moles of ammonia?
d. If 150 grams of oxygen reacted 2.5 moles of ammonia, identify the limiting and excess reagents.
e. How much of the excess reagent remains unreacted?
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b. (i)
(ii)
A green solid has the empirical formula FeBr3·5NH3 H₂O. Upon reaction with
an excess of aqueous AgNO3 it is found that 1 mole of the solid precipitates 3
moles of AgBr. Heating the green solid leads to loss of 1 mole of H₂O to yield
a blue solid with the same ratio of Fe:Br:NH3 as found in the green solid.
The reaction of 1 mole of the blue solid with excess of aqueous AgNO3
produces 2 moles of AgBr. Draw and name the octahedral green and blue
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An octahedral complex having the formula [M(dien)(NH3)(OH₂)F] has a total
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H₂N :
=
ΝΗ
NH :NH2 N
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Titanium occurs in the magnetic mineral ilmenite (FeTiO3), which is
often found mixed up with sand. The ilmenite can be separated from
the sand with magnets. The titanium can then be extracted from the
ilmenite by the following set of reactions:
FeTiO3(s)+3Cl₂(g) +3C(s)-3CO(g)+FeCl₂ (s)+TiCl, (g)
TiCL (9)+2Mg(s)-2MgCl₂(1)+Ti(s)
Suppose that an ilmenite-sand mixture contains 23.8 % ilmenite by
mass and that the first reaction is carried out with a 90.4% yield.
Part A
If the second reaction is carried out with an 87.0 % yield, what mass of titanium can be obtained from 1.20 kg of the ilmenite-sand mixture?
Express your answer with the appropriate units.
1-
μA
?
Chapter 2 Solutions
OWLV2 FOR MOORE/STANITSKI'S CHEMISTRY:
Ch. 2.1 - When you comb your hair on a dry day, your hair...Ch. 2.2 - Prob. 2.1PSPCh. 2.2 - Prob. 2.2PSPCh. 2.2 - Prob. 2.2CECh. 2.2 - Prob. 2.3PSPCh. 2.3 - Prob. 2.4PSPCh. 2.3 - A student in your chemistry class tells you that...Ch. 2.3 - Prob. 2.5PSPCh. 2.3 - Prob. 2.4CECh. 2.3 - Prob. 2.5CE
Ch. 2.4 - Prob. 2.6PSPCh. 2.4 - Prob. 2.6CECh. 2.4 - Prob. 2.7PSPCh. 2.4 - Prob. 2.8PSPCh. 2.5 - Prob. 2.9PSPCh. 2.5 - Prob. 2.10PSPCh. 2.6 - Prob. 2.7CECh. 2.7 - Prob. 2.8CECh. 2.7 - Prob. 2.11PSPCh. 2.7 - Prob. 2.9ECh. 2.8 - Prob. 2.12PSPCh. 2.8 - Prob. 2.10ECh. 2.9 - Prob. 2.11ECh. 2.9 - Prob. 2.12ECh. 2.9 - Prob. 2.13CECh. 2.9 - According to Table 2.10, five constitutional...Ch. 2.11 - Calculate (a) the amount of Ti atoms in 4.00 g...Ch. 2.11 - Prob. 2.15CECh. 2.11 - Prob. 2.16ECh. 2.11 - Prob. 2.17CECh. 2.11 - Prob. 2.18ECh. 2.11 - Prob. 2.19ECh. 2.11 - Prob. 2.14PSPCh. 2.11 - Prob. 2.15PSPCh. 2.11 - Prob. 2.16PSPCh. 2.11 - Prob. 2.20CECh. 2.12 - Prob. 2.17PSPCh. 2.12 - Prob. 2.18PSPCh. 2.12 - Prob. 2.21ECh. 2.12 - Hydrazine is composed of 87.42% nitrogen and...Ch. 2.12 - Prob. 2.20PSPCh. 2.12 - Prob. 2.22ECh. 2 - An isotope of an element contains 63 protons and...Ch. 2 - Prob. IISPCh. 2 - Prob. IIISPCh. 2 - Dioxathion, a pesticide, contains carbon,...Ch. 2 - Prob. 1QRTCh. 2 - Prob. 2QRTCh. 2 - Prob. 3QRTCh. 2 - Prob. 4QRTCh. 2 - Prob. 5QRTCh. 2 - Prob. 6QRTCh. 2 - Prob. 7QRTCh. 2 - Prob. 8QRTCh. 2 - Prob. 9QRTCh. 2 - Prob. 10QRTCh. 2 - Match these by placing the correct notation in the...Ch. 2 - Prob. 12QRTCh. 2 - Prob. 13QRTCh. 2 - Prob. 14QRTCh. 2 - Prob. 15QRTCh. 2 - Prob. 16QRTCh. 2 - Prob. 17QRTCh. 2 - Prob. 18QRTCh. 2 - Prob. 19QRTCh. 2 - Prob. 20QRTCh. 2 - Prob. 21QRTCh. 2 - Prob. 22QRTCh. 2 - Prob. 23QRTCh. 2 - Prob. 24QRTCh. 2 - Prob. 25QRTCh. 2 - Prob. 26QRTCh. 2 - Prob. 27QRTCh. 2 - Prob. 28QRTCh. 2 - Argon has three naturally occurring isotopes:...Ch. 2 - Prob. 30QRTCh. 2 - Prob. 31QRTCh. 2 - Prob. 32QRTCh. 2 - Prob. 33QRTCh. 2 - Prob. 34QRTCh. 2 - Prob. 35QRTCh. 2 - Prob. 36QRTCh. 2 - Prob. 37QRTCh. 2 - Prob. 38QRTCh. 2 - Prob. 39QRTCh. 2 - Prob. 40QRTCh. 2 - Prob. 41QRTCh. 2 - Prob. 42QRTCh. 2 - Prob. 43QRTCh. 2 - Prob. 44QRTCh. 2 - Prob. 45QRTCh. 2 - Prob. 46QRTCh. 2 - Prob. 47QRTCh. 2 - Prob. 48QRTCh. 2 - Prob. 49QRTCh. 2 - Prob. 50QRTCh. 2 - Prob. 51QRTCh. 2 - Prob. 52QRTCh. 2 - Prob. 53QRTCh. 2 - Prob. 54QRTCh. 2 - Prob. 55QRTCh. 2 - Prob. 56QRTCh. 2 - Prob. 57QRTCh. 2 - Prob. 58QRTCh. 2 - Prob. 59QRTCh. 2 - Prob. 60QRTCh. 2 - Prob. 61QRTCh. 2 - Prob. 62QRTCh. 2 - Prob. 63QRTCh. 2 - Prob. 64QRTCh. 2 - Prob. 65QRTCh. 2 - Prob. 66QRTCh. 2 - Prob. 67QRTCh. 2 - Prob. 68QRTCh. 2 - Prob. 69QRTCh. 2 - Prob. 70QRTCh. 2 - Prob. 71QRTCh. 2 - Prob. 72QRTCh. 2 - Prob. 73QRTCh. 2 - Prob. 74QRTCh. 2 - If you have a ring that contains 1.94 g gold,...Ch. 2 - You have a pure sample of the antiseptic...Ch. 2 - You have a pure sample of apholate, C12H24N9P3, a...Ch. 2 - Prob. 78QRTCh. 2 - Prob. 79QRTCh. 2 - Prob. 80QRTCh. 2 - Prob. 81QRTCh. 2 - Prob. 82QRTCh. 2 - Prob. 83QRTCh. 2 - Prob. 84QRTCh. 2 - Prob. 85QRTCh. 2 - Prob. 86QRTCh. 2 - Prob. 87QRTCh. 2 - Prob. 88QRTCh. 2 - Prob. 89QRTCh. 2 - Prob. 90QRTCh. 2 - Quinine (molar mass = 324.41 g/mol) is used as a...Ch. 2 - Prob. 92QRTCh. 2 - The mineral uraninite is a uranium oxide that is...Ch. 2 - Carbonic anhydrase, an important enzyme in...Ch. 2 - Nitrogen fixation in the root nodules of peas and...Ch. 2 - Disilane, Si2Hx, contains 90.28% silicon by mass....Ch. 2 - Chalky, white crystals in mineral collections are...Ch. 2 - A well-known reagent in analytical chemistry,...Ch. 2 - Prob. 99QRTCh. 2 - Prob. 100QRTCh. 2 - The density of a solution of sulfuric acid is...Ch. 2 - Prob. 102QRTCh. 2 - Prob. 103QRTCh. 2 - Prob. 104QRTCh. 2 - Prob. 105QRTCh. 2 - Prob. 106QRTCh. 2 - Prob. 107QRTCh. 2 - The Statue of Liberty in New York harbor is made...Ch. 2 - Prob. 109QRTCh. 2 - Prob. 110QRTCh. 2 - Prob. 111QRTCh. 2 - Prob. 112QRTCh. 2 - Prob. 113QRTCh. 2 - Prob. 114QRTCh. 2 - Prob. 115QRTCh. 2 - Prob. 116QRTCh. 2 - Prob. 117QRTCh. 2 - Prob. 118QRTCh. 2 - Prob. 119QRTCh. 2 - Prob. 120QRTCh. 2 - Prob. 121QRTCh. 2 - Prob. 122QRTCh. 2 - Prob. 123QRTCh. 2 - Prob. 124QRTCh. 2 - Prob. 125QRTCh. 2 - Prob. 126QRTCh. 2 - Prob. 127QRTCh. 2 - Prob. 128QRTCh. 2 - Prob. 129QRTCh. 2 - The element bromine is Br2, so the mass of a Br2...Ch. 2 - Uranium is used as a fuel, primarily in the form...Ch. 2 - Prob. 132QRTCh. 2 - Hemoglobin is an iron-containing protein (molar...Ch. 2 - There are three naturally occurring isotopes of...Ch. 2 - Prob. 135QRTCh. 2 - Prob. 136QRTCh. 2 - Prob. 137QRTCh. 2 - An adult human body contains 6.0 L blood, which...Ch. 2 - Prob. 139QRTCh. 2 - Prob. 140QRTCh. 2 - Prob. 141QRTCh. 2 - The present average concentration (mass percent)...Ch. 2 - Prob. 144QRTCh. 2 - A 4.22-g mixture of calcium chloride and sodium...Ch. 2 - A certain metal, M, forms two oxides, M2O and MO....Ch. 2 - If you heat Al with an element from Group 6A, an...Ch. 2 - Prob. 2.ACPCh. 2 - The age of the universe is unknown, but some...Ch. 2 - Prob. 2.CCPCh. 2 - Prob. 2.DCPCh. 2 - Prob. 2.ECP
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