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- Multiple ChoicePlease save your changes before editing any questions.
When you make a dilution, which of these values remains constant?
The molarity (M)
The total moles of solute
The volume (V)
The concentration
- Multiple ChoicePlease save your changes before editing any questions.
As we dilute a solution.....
The volume increases and the molarity (M) increases
The volume increases and the molarity (M) decreases
The volume decreases and the molarity (M) increases
The volume decreases and the molarity (M) decreases
- Multiple ChoicePlease save your changes before editing any questions.
When Na2O is added to water it reacts violently instead of making a solution. What is the molar mass of Na2O?
62 g/mol
39 g/mol
55 g/mol
100 g/mol
- Multiple ChoicePlease save your changes before editing any questions.
The term molar which is used to describe a solution's concentration, is written as?
M
mol
g
g/L
- Multiple ChoicePlease save your changes before editing any questions.
When a solution is heated until it boils, the molarity...
Doesn't change because everything evaporates
Decreases
Increases
Will become 1M
- Multiple ChoicePlease save your changes before editing any questions.
Molarity is ...
grams of solute/deciliters of solvent.
grams of solute/liters of solution.
moles of solute/liters of solution.
moles of solute/milliliters of solvent.
- Multiple ChoicePlease save your changes before editing any questions.
50 ml of a 1 M solution is diluted until the final volume is 80ml. How much water was added?
50 ml
1.3 ml
30 ml
130 ml
- Multiple ChoicePlease save your changes before editing any questions.
2 moles of H2O would weigh ____ grams
18 grams
9 grams
36 grams
2 grams
- Multiple ChoicePlease save your changes before editing any questions.What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO3 to a volume of 250 mL?15.9 M0.636 M0.642 M1.59 M
- Multiple ChoicePlease save your changes before editing any questions.What is the molarity of a solution made by adding 1.565 moles of PbNO3 to 500 mL?300. M31.3 M3.13 M1.56 M
- Multiple ChoicePlease save your changes before editing any questions.Which sweet tea would you expect to taste the sweetest?1M3M3.1M2.5M
- Multiple ChoicePlease save your changes before editing any questions.
If you have 34 mL of a 0.5 M NaBr solution, what will the concentration be if 56 mL of water is added to it?
.188 M
3.78 M
.389 M
1.76 M
- Multiple ChoicePlease save your changes before editing any questions.
The units "M" can also be written as:
mol/L
moles
g/L
g/mol
- Multiple ChoicePlease save your changes before editing any questions.
40 grams of NaOH = ________ moles
1
2
160
1600
- Multiple ChoicePlease save your changes before editing any questions.
If 1 mole of solute is dissolved in 1 liter of water, what is the molarity?
2M
.5M
1M
It can't be determined unless you know the solute