What is the larger unit used my chemists to describe a quantity of atoms?
What is the mole?
100
The name of the reactant whose concentration determines how much product is made in a reaction.
What is the limiting reagent?
100
The amount of the chemical product predicted by the stoichiometry of a balanced chemical equation based on the concentration of the reactants
What is theoretical yield?
100
The basic fomula showing what elements are present in a compound and what is their ratio.
What is chemical formula?
100
How many moles of helium are contained in a 5L vessel at 101 kPa and 30 deg. C? (R = 8.31 kPa x L/mol x K)
What is 0.201 mol?
200
6.02 x 10^23
What is Avogadro's number?
200
22.4 L
What is the molar volume of a gas at STP?
200
The amount of product that was actually yielded during a conducted experiment.
What is actual yield?
200
The chemical formula having the smallest whole-number ratio of atoms in the compound
What is the empirical formula?
200
Solid XeF6 is prepared by reacting xenon gas with fluorine gas. How many grams of fluorine (F2) are required to produce 10g of XeF6?
Equation: Xe + 3F2 => XeF6
What is 4.65g F2?
300
The mass of 1 mole of pure substance.
What is the Molar Mass (g/mol)?
300
PV = nRT
What is the ideal has law?
300
Blank = = [actual yield / theoretical yield] x 100%
What is percent yield?
300
Empirical formula times the ratio of the molar mass to the mass of the empirical formula gives this kind of a chemical formula.
What is the molecular formula?
300
What is the mass percent of hydrogen in C10H18O (molar mass 154g/mol)?
What is 11.7%?
400
The mass in atomic mass units (amu) of one molecule.
What is the Molecular Mass (amu)?
400
The variable R in the ideal gas law expression.
What is the ideal gas law constant?
400
The actual yield is often equal to the theoretical yield. True or False?
False
400
The formula C2H6 is an empirical formula. True or false?
False
400
If the mole ratios of C : H : O determined from mass percents of a compound are found to be 2.5 : 7 : 3.5, what is the empirical formula of the compound?
What is C5H14O7?
500
The mass in atomic mass units of one formula unit of an ionic compound.
What is the formula mass?
500
The four men whose laws and principles make the ideal gas law valid.
Who are Boyle, Charles, Gay-Lussac, and Avogadro?
500
The percent yield is commonly less than 100%. True or false?
True
500
The empirical formula of a compound is C13H19O7. True or False?
True
500
The empirical formula of a compound is CH2O. If the molar mass of the compound is 90g/mol, what is the molecular formula of the compound?