QUIZ PROBLEM #7 Instructions:  Type your answer to the question in the textbox below. Show all work on your “work” page.  Label which problem it is (#7).   Question: Use dimensional analysis to solve this problem. How many grams of H2O are produced by the reaction of 85.0 mL of 4.25 M HCl solution with excess NaHSO4 in the reaction shown here? 2 NaHSO4 (aq)  +  8 HCl (aq)   –>   Na2S2O3 (aq)  +  4 Cl2 (g)  +  5 H2O (l)   Molar Masses for All Substances: NaHSO4 = 120.06 g/mol   |   HCl = 36.46 g/mol Na2S2O3 = 158.10 g/mol   |   Cl2 = 70.90 g/mol   |   H2O= 18.02 g/mol

QUIZ PROBLEM #8 Situation:  63.4 grams of NO2 and 21.3 grams of H2 are combined and they react according to this chemical equation: 2 NO2 (s)  +  7 H2 (g)   –>   2 NH3 (g)  +  4 H2O (g) Molar masses for all substances: NO2 = 46.01 g/mol   |   H2 = 2.02 g/mol   |   NH3 = 17.04 g/mol   |   H2O = 18.02 g/mol   Instructions:  Type your answers to the questions in the textbox below. Label each answer A, B, C, D, E Show all work on your “work” page.  Label which problem it is (#8).   Questions: A.  Which reactant is limiting? B.  Briefly explain in words how you know which one is the limiting reactant based on your calculations.  Be specific. C.  How many grams of H2O should be produced? D.  How many grams of NO2 should be left over at the end? E.  How many grams of H2 should be left over at the end?  

Applying a very thin coat of opaque paint over a painted surface to produce a soft or dull effect.

Of all the elements of design, line is the not most familiar to us.

Artists will often delineate the form of an object by using line to create shapes and reveal the edges of an object, or its outline.

QUIZ PROBLEM #4 Instructions:  Type your answer to the question in the textbox below. Show all work on your “work” page.  Label which problem it is (#4). Question: You mix 268 mL of a magnesium nitrate solution with enough water to create 5.75 L of a solution that is 0.109 M in Mg(NO3)2. What was the molarity of the original magnesium nitrate solution?

QUIZ PROBLEM #1 Instructions:  Select your answers from the dropdown lists. Note:  It is not possible to format superscripts or degree signs in the answer choice lists. There is no need to write anything on your “work” pages.  But if you do, include that with your scanned pages that you submit later. Questions: Answer the questions below for the molecule shown here: A.  How many sigma bonds are there in this molecule, in total?  [sigmatotal] B.  How many pi bonds are there in this molecule, in total?  [pitotal] C.  Consider just the C atom for these questions: What type of hybrid orbital is it using for its sigma bonds?  [Csigma] What is the angle between its sigma bonds?  [Cangle] What is the name of its molecular geometry?  [Cgeometry] D.  Consider just the N atom for these questions: What type of hybrid orbital is it using for its sigma bonds?  [Nsigma] What is the angle between its sigma bonds?  [Nangle] What is the name of its molecular geometry?  [Ngeometry]

Using a balled up cloth or paper to apply paint to the painting surface by pressing it against the paper over and over to create texture.

Lines in sets, costumes, and lighting can have the same dramatic effects and can be used to create focus or guide the audience’s eyes for the same purpose, or to evoke a sense of emotion in the audience.

Refers to the tactical and visual quality of a surface.