What is the formula for calculating molarity?
Which equation is used to calculate the final concentration after dilution
M1V1=M2V2
How many moles are in 22.4 liters of a gas at STP?
1 mole
What is the volume of 3 moles of a gas at STP?
67.2 liters
What is the limiting reactant in the reaction 2H2 + O2 -> 2H2O if 4 moles of H2 and 1 mole of O2 are mixed?
O2
If 0.5 moles of NaCl are dissolved in 2 liters of water, what is the molarity of the solution?
0.25 M
What volume of 3 M HCl is needed to prepare 250 mL of 1 M HCl
83.3 mL
0.5 moles
What is the formula for the calculating the volume of a gas using the ideal gas law?
V= nRT/nP
What is the mole ratio of Ns to NH3 in the reaction
N2 + 3H2 -> 2NH3
1 ; 2
What is the molarity of a solution containing 10 g of KOH in 500 mL of solution? (Molar mas of KOH = 56 g/mol)
0.357 M
If 100 mL of a 2 M solution is diluted to 500 mL, what is the final molarity?
0.4 M
What is the formula to calculate the number of moles of a substance?
n = m/M
What is the SI unit of volume?
Cubic meter (M3)
How many grams of NaCl are produced when two moles of Na react with excess Cl2
2Na + Cl2 -> 2NaCl. MNaCl =58.5 g/mol
117 g
What is the molarity of a solution containing 58.5 g of NaCl in 1 liter of water? (molar mass of NaCl = 58.5 g/mol)
1 M
What happens to the molarity of a solution when it is diluted?
It decreases
How many liters of 0.5 M solution are needed to provide 0.25 moles of sol
0.5 L
What is the volume of 0.5 moles of an ideal gas at STP?
11.2 liters
1:1
What is the molarity of a solution containing 0.2 moles of solute in 250 mL of solution?
0.8 M
What is dilution?
The process of reducing the concentration of a substance (solute) in a solution by adding more solvent
What is Avogadro's number?
6.022 * 1023
If a gas occupies 10 liters at 300 K, what will its volume be at 600 K, assuming constant pressure?
20 liters
What is stoichiometry?
The study of quantitative relationships between reactants and products in a chemical reaction.