Mole Conversions
What is Avogrados number?
6.023 x 1023
What is the percentage of Hydrogen in HCl?
3% Hydrogen
What is a solvent?
What is being dissolved in a solution.
Define Concentration
The amount of a substance in a defined space.
What is a mole and whats its value
Its a really big chemical unit, 6.02x1023
What is the molar mass of CO2?
44.01 g/mol CO2
What is the percent composition of H in (NH4)2S?
H: 11.8%
True or False is water a solute?
False
What is the molarity of a solution that contains 10 grams of Silver Nitrate that has been dissolved in 750 mL of water
0.078 M AgNO3
What is Molarity?
The unit of concentration expressed as the number of moles of dissolved solute per liter of solution
What is the mass in grams of 1.73 mol of CaI₂?
508.41 grams CaI₂
What is the Percent Composition of CuBr2?
Round Answer to nearest whole number?
Cu 28% Br 72%
List the two ways you can dilute a solution?
By adding more solvent or taking out solute
You want to create a .25 M Potassium Chloride solution. You made 5 grams of Potassium Chloride. How much water is needed?
270 mL H2O
How many moles of copper are in 6000000 atoms of copper?
9.9632 × 10⁻¹⁸
How many molecules are in 2.00 mol of CO₂?
1.204 x 1024 molecules CO2
What is the percent composition of Potassium Permanganate?
Molecule KMnO4
K: 25%
Mn: 35%
O: 40%
If i add 25mL of water to 125mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be?
0.125 M
What is the molarity of a solution that contains 13.4 grams of calcium chloride dissolved in 655 mL of water?
0.184 m CaCl2
What is the molar mass?
The ratio between the mass and the amount of substance in moles of any sample.
What is the amount of atoms in 25.75g Hg?
7.728 x 1022 atoms Hg
What is the percent composition of (NH4)3PO4
N: 28%
H: 8%
P: 43%
O: 21%
I have 345mL of a 1.5 M NaCl solution. If I boil the water until the volume of the solution is 250mL, what will the morality of the solution be?
2.07 M
What is the molarity of a solution that contains 46 grams of sodium chloride and 250 mL of water?
3.3 m NaCl
How many atoms are there in one gram of Carbon?