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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)  —> ?

Airbags rapidly produce nitrogen gas through reactions like this one: 2 NaN3 (s) –> Na (s) + 3 N2 (g)   In this reaction, what volume of nitrogen gas can be produced by the reaction of 12.5 g of NaN3, if the temperature is 365 K and the pressure is 1.200 atmospheres?  The formula mass of NaN3 = 65.00 g/mol.   The answer must have the correct significant figures ( 1 pt) and unit ( 1 point) . Circle your final answer.  All work must be shown for credit. No work=no credit. All work must in your own hand-writing.    

Consider the following equation.  Cu (s) + 2 HBr (aq) –>  CuBr2 (aq)  +  H2 (g) A 100. mL solution of 0.025 M HBr that completely reacts with copper metal will produce ___ moles of hydrogen gas.

What is the pH of a 7.8 x 10-2 M KOH solution?   The answer must have the correct significant figures ( 1 pt) and unit ( 1 point) . Circle your final answer.  All work must be shown for credit. No work=no credit. All work must in your own hand-writing.  

A 3.0 kg sample of pond water contains 3.6 mg of a pollutant.  What is the concentration of this pollutant in ppm?