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A chemist prepares an aqueous solution of sodium hydroxide.  The solution contains 263.3 g of NaOH and has a volume of 750.0mL.  What is the molarity (moles/liter) of this solution? M=mols/L Answer with correct unit (1 point) and correct significant figures ( 1 point) All work must be shown for credit. No work=no credit. All work must in your own hand-writing.  

What is the formal charge on the oxygen atom in: CH3O   (Hint: Draw out the molecule with the correct valence electrons)

A small Oreo Dairy Queen® blizzard contains [x] kilocalories of stored chemical energy.  What is this energy in kilojoules?   1cal= 4.184 joules

Given the accompanying partial activity series, predict which of the following will react with cobalt, Co.   Zn –>Zn2+ + 2e– Fe –> Fe2+ + 2e– Co –> Co2+ + 2e– Ni –> Ni2+ + 2e– Cu –> Cu2+ + 2e–  

A neutral carbon atom has                   valence electrons.

Write the balanced net ionic equation for the reaction consisting of the two half-reactions given. Cu –> Cu2+ + 2e– Au3+ + 3e––> Au

The Lewis structure of the cyanide ion is shown here.  How many valence electrons are in this ion?  -1:C = N:  

  In H3C-BCl2 , which atom does NOT have a complete valence? ( Hint: you may need to draw the Lewis structure first)

ClO2⁻  ion    1 pts: Draw the lewis structure of the ion shown above 2 pts. Calculate the number of valence electrons: Show your work  2 pts. Calculate the formal charge of Cl. 2 pts. Calculate the formal charge for each Oxygen.

Energy is often stored in the form of chemical bonds.  This is a type of ___.