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Reactions can be characterized as combination, decomposition, single-displacement, or double-displacement. Categorize the following reactions. 2H2 + O2 –> 2H2O   [red23]   2KOH + H2SO4 –>K2SO4 + 2H2O   [red25]   Fe +  2H2O  –> Fe(OH)2 + H2   [red24]   CaCO3 –> CaO  + CO2      [red26]                  

Sodium combines with chlorine to form sodium chloride. Write a balanced equation for the reaction.

An irregularly shaped object weighs 68 grams. A researcher wants to know its density so she takes a graduated cylinder and fills it to 50 ml. When the object is placed in the cylinder the water volume increases to 88 ml. What is the density of the object. Give the answer to 1 decimal place. [red38] g/ml

A sample of 400 g of methane (CH4) is mixed with 600 g of chlorine (Cl2). Determine which is the limiting reactant according to the following equation.  CH4  +  4Cl2  –>  CCl4 + 4HCl Limiting reactant:    Spell out the answer. [red28]   What is the maximum mass of CCl4 that can be formed? Give the answer as a whole number. [red29] grams

Give the formula for the following compounds: Magnesium phosphate  [red10] Carbon Monoxide [red11]

A 250 ml sample of oxygen gas is collected by water displacement. As a result the oxygen is saturated with water vapor. The partial pressure of water vapor at the prevailing temperature is 40 mm Hg. Calculate the partial pressure of the oxygen if the total pressure of the sample is 720 mm Hg.  [red33] mm Hg

Name the following compounds: MgBr2    [red4] CaF2   [red5] Na2SO4   [red6] FeCl2 [red7]  

Which of the following is likely to result in allocative inefficiency?  

The market inefficiency of a negative production externality will be eliminated if a policy is put in place that results in which of the following outcomes?  

In the absence of externalities, which of the following is true of a competitive market in equilibrium?