Cards in this guide (23)
How many moles of magnesium oxide are formed when 4 moles of magnesium react with oxygen
Four (4) moles of magnesium oxide are formed when 4 moles of
magnesium react with oxygen.
If 2 moles of sodium carbonate are used in the reaction how many grams of sodium chloride will be formed
The correct value for the universal gas constant is
Values of general gas constant are: (value dependant on
units)
R = 0.08205746 [atm. ℓ.mol-1.K-1]
R = 8.314472 [Pa.m3.mol-1.K-1 or J.mol-1.K-1]
R = 1.99 [Cal.mol-1.K-1]
An increase in gas pressure is a result of an increase in molecular collisions
Sodium will react with oxygen to form sodium oxide Use the formula below to determine how many grams of sodium oxide will be formed if 46 grams of sodium are used in the reaction
The ideal gas law measures pressure in
In the ideal gas law n represents
Sophie was asked to distinguish gases from solids and liquids Which of the following answers would be most correct
Gases are the least dense, have the greatest particle energy,
and have no specific shape.
How many grams of water will be needed to produce 1.5 moles of acetylene gas
As the temperature of a gas increases the volume of the gas must also increase to maintain constant pressure
That is correct. it's called Charles's law. it shows the
connection between a gases temperature and its volume. in order to
maintain constant pressure you must increase the volume of the
container holding the gas if you increase the temperature of the
gas.
What term is defined as the number of moles of solute divided by the number of liters of solution
Molarity, abbrev. M, units: mol/L, mmol/ml
An unknown sample with a molecular mass of 180.0g is analyzed to yield 40 percent C 6.7 percent H and 53.3 percent O What is the empirical formula and the molecular formula of this compound
A compound is found be 36.5 percent Na 25.3 percent S and 38.0 percent O What is its empirical formula
The elements in an imaginary compound exist in the mole ratio of 1 3 1 for elements XY What will the empirical formula for the compound be
What is the best definition of manometer
an instrument that is used to measure gas in a closed container.
A+
Pressure is used to increase the volume of gas
Pressure is used to increase the volume of gas in Boyle's
law.
Calculate the empirical formula of a compound formed from 3 percent C 0.3 percent H and 96.7 percent you Which formula below correctly represents the empirical formula
A compound formed of 0.059 mol hydrogen and 0.94 mol oxygen has a molecular mass of 34.0 gmole What is the molecular formula of this compound
Choose the product metal oxide plus nonmetal oxide æ
What is the empirical formula for the molecular formula C9H15O3
A compound found to contain 75.7 arsenic and 24.3 oxygen would have which of the empirical formulas below
From this reaction 127.1 grams of copper will produce how many grams of silver
Choose the best definition of STP
a term that indicates a combined measurement of standard atmospheric pressure and room temperature. A+
