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Balance the following equation:  Use numeric format to answer. Ex: 100  [A]Mg + [B]N2 → [C]Mg3N2

68.12 grams of NaOH is dissolved in 510. mL of solution calculate the molarity  Answer should have proper significant figures

Calculate the wavelength, in nanometers, of a frequency of  7.28×1014 Hz?

The following 4 Essay questions require you to submit your work.  All work must be in your own handwriting.  The use of electronic devices, including writing tablets is not allowed.  No work= No credit.  Work must be neat and legible. If I cannot read it, you will not receive credit for it.   All of your work will be submitted in a Quiz labeled “Ch 11 Exam UPLOADS” within 10 minutes of completion of the exam. Make sure to type in your final answer. If you don’t type in your answer but show me work for the questions, I will not give you credit for it .  With the exception of Essay Question #4.

A certain gas has a pressure of 0.759 atm.  What is its pressure in psi?

Using VSEPR , fill in the table.  Upload your answer here- must be handwritten.  Must show all electrons in the proper place.   Total # valence electrons Lewis Dot Structure. if resonance, draw the resonance.  Name of molecular Shape Resonance? yes or no CHO2-1 CH4

An aqueous solution is found to have an H+ concentration of 2.0 x 10-4 M.  What is the concentration of OH- in this solution?

The following 4 Essay questions require you to submit your work.  All work must be in your own handwriting.  The use of electronic devices, including writing tablets is not allowed.  No work= No credit.  Work must be neat and legible. If I cannot read it, you will not receive credit for it.    

The net ionic equation for the reaction, Cu (s) + 2 HNO3 (aq) –>  H2(g)  + Cu(NO3)2 (aq)  

The precipitate for the following precipitation reaction is ___.   LiBr (aq)  +  AgNO3 (aq)  —> ?