Name :Chapter 7 WS #2Ch. 7-2 pg. 236 pp#1-2: Average Atomic MassFind avg at mass Ga if 60.00% has mass 68.926 amu & 40.00% a mass of 70.925 amu. Ans.: = 69 73 amu68.926 0.6oll+x-(1-0.601)=69.73 amu2. Find avg Oz if 99.76% = 15.99amu, 0.038% = 17.00 amu, & 0.20% of it is18.00 amu. Ans.: = 15.9944amuCh. 7.2 p. 253,42 Find avg at mass Ag if 51.35% is 106.9050 amu and the rest is 108.9045 amu. Ans. = 107.88 amu.CH. 7-2 pg. 239 pp#1 Molar MassFind the molar mass for each of the following compounds:CsI 2598/g/mol C12H»O¡1342.g/mol2965I2 253. g/mol8089Mg3(PO4)2 262, g/mol855CH. 7-2 pg. 239 pp#2Write the formula and then find the molar mass for the followingcerium hexaboride CeB6, 44g/moliron (III) hydroxide FeloH), lob64g/mol141.9014/molaluminum sulfate Al2/504)342.17 g/moltin(II) chloride Sncl2, L39.6 g/moltetraphosphorus decoxideCh. 7-2 SR pg. 240 pp#11Determine the formula, the molar mass, and the number of moles in 2.11g of each of the following compour1. strontium sulfide – Ans.: SrS,g/mol,mol SrS (try to get 1.76x102)phosphorus trifluoride – Ans.:g/mol,mol PF3 (2.40 x102)

Answered: Image /qna-images/answer/60fe662b-1c24-4b49-9b3d-0080fb4877c9.jpg

Ch. 7-2 pg. 236 pp#1-2: Average Atomic Mass Find avg at mass Ga if 60.00% has mass 68.926 amu & 40.00% a mass of 70.925 amu. Ans.: = 69.73 amu 68.926 0.6 oll+x-(1-0.6011)= 69.73 amu 2. Find avg O, if 99.76% = 15.99amu, 0.038% = 17.00 amu, & 0.20% of it is18.00 amu. Ans.: = 15,99 %3D 44amu Ch. 7.2 p. 253, 42. Find avg at mass Ag if 51.35% is 106.9050 amu and the rest is 108.9045 amu. Ans. = 107.88 amu.

Ch. 7-2 pg. 236 pp#1-2: Average Atomic Mass Find avg at mass Ga if 60.00% has mass 68.926 amu & 40.00% a mass of 70.925 amu. Ans.: = 69.73 amu 68.926 0.6 oll+x-(1-0.6011)= 69.73 amu 2. Find avg O, if 99.76% = 15.99amu, 0.038% = 17.00 amu, & 0.20% of it is18.00 amu. Ans.: = 15,99 %3D 44amu Ch. 7.2 p. 253, 42. Find avg at mass Ag if 51.35% is 106.9050 amu and the rest is 108.9045 amu. Ans. = 107.88 amu.

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter2: Atoms And Molecules

Section: Chapter Questions

Problem 2.86PAE: 2.86 For some uses, the relative abundance of isotopes must be manipulated. For example, a medical...

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