Concentration
Solubility
Miscellaneous
100
The number of grams of Ca(OH)2 contained in 0.500 L of a 0.450 M solution.
What is 16.7 g of Ca(OH)2?
100
Amount of K2Cr2O7 that will precipitate out of a saturated solution at 80oC, when cooled to 30oC.
What is 45 g K2Cr2O7
100
This TV character said, “Live long and prosper”
Who is Mr. Spock?
200
What is the molality of a solution that contains 48 grams of sodium chloride and 250 mL of water?
200
30.0 g NaCl is added to 50.0 g H2O at 50oC, determine if the resulting solution will be saturated, unsaturated or superaturated
What is saturated? (@ 50oC 100g of water can hold about 35g NaCl, so with 50g of water you can dissolve a maximum of about 18g of NaCl)
200
Write the formula for the insoluble compound created when the following pairs of solutions mix. If both products are soluble say no reaction.
1. iron (II) carbonate and sodium hydroxide
2. ammonium chloride and strontium perchlorate
3. barium nitrate and potassium sulfate
1. Fe(OH)2
2. no reaction
3. BaSO4
300
The density of ethylene glycol (antifreeze, HOCH2CH2OH) is 1.09 g/mL. How many mL of ethylene glycol should be mixed with 375 mL of water to make a 7.50% by mass mixture? (density of water is 1.00 g/mL)
x/(x+375) * 100 = 7.50
x/(x+375) = 0.0750
x = 0.0750x + 28.125
0.925x = 28.125
x = 30.4 g antifreeze
27.9 mL are required
300
The precipitate that will form when solutions of Sr(NO3)2 and K2SO4 are mixed
What is SrSO4?
400
What is the molarity of a solution that contains 10.0 grams of silver nitrate that has been dissolved in 750 mL of water? What is the percent by mass of silver nitrate? What is the mole fraction of the solute in the solution?
400
Write the chemical equation for the following reaction including states of matter: ammonium sulfate + aluminum chloride ->
(NH4)2SO4(aq) + AlCl3(aq) --> No reaction
500
Write the net ionic equation for the following reaction including states of matter: sodium carbonate + iron (II) chloride ->
CO32-(aq) + Fe2+(aq) -> FeCO3(s)
500
The average human body contains this many pints of blood.
What is nine?