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When solutions of potassium iodide and lead(II) nitrate are mixed, the result is potassium nitrate and lead(II) iodide.  This is an example of a ___________________ reaction.

Which of the following best represents a balanced equation for the reaction of nitrogen gas with hydrogen gas to produce ammonia?  

Which of the following compounds, when dissolved in water, will result in dissociation?  

How many kilograms of 6.58 moles of KF? Report answer in correct significant figures.  (hint: make sure to answer in the correct units)  

What type of reaction is the following equation:  2 P + 3 Cl2 –> 2 PCl3  

Consider the reaction below:        4Fe + 3O2 –> 2Fe2O3   If 44.2 grams of oxygen react with an excess of iron, what mass of Fe2O3 can form?  (Fe2O3= 159.70 g/mol)   Must show all your work to receive credit- No work =no credit ( Hint: converting from gram of A to gram of B)

When heated, zinc and sulfur combine to form a new compound, zinc sulfide.  In this reaction, 

The orange color of a neon lamp results from an electric current being passed through a tube filled with neon gas.  If this light passes through a prism, the light divides into distinct “lines” of colored light.  This pattern is called the            of neon.

Lithium carbonate, Li2CO3, is commonly used to treat bipolar disorder.  What is the percent by mass of carbon in this compound (to the nearest whole percent)?

A photon has the energy 5.55 x 10-19 J.  What is this photon’s wavelength in nanometers? Answer in the correct number of significant figures.  You must show all your work and submit an image of your work to receive credit. Work must be in your own writing.