Chemistry 2nd Semester Review 2: Question Preview (ID: 31552)

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The reactant that limits the extent of the reaction is called
a) excess reactant b) limiting reactant c) actual yield d) theoretical yield
The amount of product actually produced by a chemical reaction is called the
a) actual yield b) theoretical yield c) percent yield d) limiting reactant
A _______ is a ratio between the number of moles of any two substances in a balanced chemical reaction
a) percent yield b) stoichiometry c) mole ratio d) theoretical yield
Sodium bromide dihydrate is correctly written as
a) NaBr.2H2O b) NaBr.(HO)2 c) (NaBr)2.H2O d) NaBrH2
Which conversion factor would you use to calculate correctly the mass of 2 moles of the element titatnium
a) 47.87 mol Ti/ 1 g Ti b) 47.87 g Ti/1 mol Ti c) 1 g Ti/ 47.87 mol Ti d) 1 mol Ti/ 47.97 g Ti
Which compound has the smallest molar mass?
a) CO2 b) CO c) H2O d) H2O2
Methane (CH4) contains 75% Carbon. What percentage of methane is hydrogen?
a) 25% b) 4% c) 6% d) 33%
One mole of silicon has a mass of 28.086 g, and one mole of carbon has a mass of 12.011 g. What is the mass of one mole of silicon carbide (SiC)
a) 2.340 g b) 40.097 g c) 16.075 g d) 3.3734 x 10 2 g
As a hydrated compound is heated, it decreases in
a) brightness b) color c) temperature d) mass
In the formation of a covalent bond, electrons are
a) shared b) transferred c) lost d) gained
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