WA. Homework 8

WA. Homework 8 - Consider the following chemical equation:...

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Unformatted text preview: Consider the following chemical equation: 4NH3 + 302 4: 2N2 + SHZO How many moles of H20 are produced by the reaction of 3.40 moles of NHa? -’ E5. U mol No Ilarlrs. To determine what portion of the quation you have ciorrect, check antion sciore at the top of the assignment. Use formal charge or oxidation states to determine the charge on each of the following ions. Note that lone pairs have been omitted, but each atom obeys the octet rule. Be certain to include a + or - in each. No marks will be shown for this problem. fi’ i’ i’ NED O—C—O 07P40 07040 A E C D Draw the Lewis sthcture for C302 that minimizes formal charge. Note there are two resonance stn.|cturesr but only one minimizes formal charge. 91:." E40 Ives-i E24 I 5P=I"E: No Marks. To determine what portion of the question you have correct, check question score at the top of the assignment. Rate the relative polarities of the following bonds from 1 : least to 4 : most polar. o—H I‘VE rm BE Al-H '4 E2 Write the formulas of the following molecules. Answers are case sensitive. sulfur hexafiuoride : .I I ESFS carbon monoxide : I“ I as nitrogen monoxide (also known as nitric oxide): I“ I ENG oxygen ' I’ I E How many moles of KF can be produced when 4.00 mol K react with 7.00 mol F2? IV E4 0 moIKF How many moles of each reactant are left over? Note that at least one must disappear. mol K remain mol F2 remain How many moles of sulfate ionsr cobalt(]Il) ions[ and oxygen atoms are present in 0.304 mol of cobalt(]Il) sulfate? sulfateions -’ filJSZ mol oobaltun) ions -~’ E0355 mol oxygen atoms -’ E4505 mol Write the names for the following substances: {Note that Group on nietafs are at: +1, Group 2!! metals are all +2, and the following ions always have the same axidabbns state: AF‘, 2n”, m2+ and Ag“. Therefore, it: is not necessary Do specify the oxidation state for these metals.) m —x mama Follow the imtructiorls given in the heading of the assignment to draw Lewis sthcture for Clo," and indicate a" nonzero formal charges. Ekz-s’ E24 ‘VE:-~’ E20 ‘SP:I~’ HZ Formal Charge: m E El; Lewis Structure: m. E X 1,1,3,2,3,- 1,1,- 1 Give the molar mass to the nearest whole number of each of the following: titanium(N) oxide I tha m(I) phosphate E708 scandium (III) carbonate J BE rutheniumflfl) sulfate E490 manganesefll) nitrite 147 \ Home My Assignments ...
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WA. Homework 8 - Consider the following chemical equation:...

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