Blog

Balance the following equation: (give numerical answer ex: 1) [Al]Al +  [HCl] HCl –>  [AlCl3] AlCl3  +  [H2]H2

Which of the following would be described as a decomposition reaction?  

 In the context of chemical reactions, reduction means ___.

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,