Answered: 1.What is the percentage composition of…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter2: Atoms, Molecules, And Ions

Section: Chapter Questions

Problem 2.76QE

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1.What is the percentage composition of C6H12O6? Must show work. 2.Draw the Lewis structure for the following compounds (Be sure to show the process) CO2, Li2S, and H20. 3.Find the empirical of a compound with a percentage composition of 52.3% C, 13.0% H, 34.7% O. Must show work. 4.calculate the molar mass for Mg3(PO4)2, Ca(OH)2, and P2Cl5 (must show work) 5.what is the term for a digit in front of a chemical formula that helps to balance a chemical equation? 6.A bond that results from the electric attraction between cations and anions is called a(n): ? 7.which element is likely to form a covalent bond with chlorine? 8.Name the following compounds: AL(PO4), (NH4)2S, N2O3, SnCl4, CCl4. 9.write the formulas for the following compounds (please show work) Mercury (II) cyanide, Zinc hydroxide, aluminum dichromate, Copper (I) sulfide, Phosphorus heptabromide dichloride. 10.Determine if the following compound is polar, non polar, or ionic based strictly on electronegativity differences: KNO2(must show work). 11.if you see -ane in the base of a compound name what does that tell you about the Lewis structure of the particular compound? 12.Draw the Lewis structure, determine the VSEPR molecular shape and bond type for CO2 13.Calculate the oxidation number for each element within these compounds using algebraic computations. Mg3(PO4)2, NaOH, PO4^3-(Please show your work) 14.A high school student was diagnosed with stage 1 cancer and his specialist advised that he take the chemotherapy drug for treatment. The compound structure of the drug contains the following mass spectrometer reading percentages: 65.0 platinum, 9.34 nitrogen, 2.02 hydrogen, and 23.63 chlorine by mass and the molar mass is about 301.10 g/mol. Determine the empirical formula and molecular formula for this chemotherapy drug ? What is the name of this drug? (Show your work) 15.

Answer the following questions about this nitrogen ion (N).
1. How many protons are present in this ion?
(a) 4
(b) 10
(c) 7
(d) 14
2. How many electrons are present in this ion?
(a) 4
(b) 10
(c) 7
(d) 14
3. How many neutrons are present in this ion?
(a) 14 (b) 4
(c) 10 (d) 7
4. What is the atomic number?
(a) 14 (b) 7
(c) 4
(d) 10

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