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Molecular Mass by Freezing point Depression (Preliminary Lab)The following errors occurred when the above experiment was carried out. How would each affect the calculated molecular mass of the solute (too high,too low, no effect)? Explain your answer. (a) The thermometer uses actually read 1.4C too high.(b) Some of the solvent was spilled before the solute was added.(c) Some of the solute was spilled after it was weighed and before it was added to the solvent.(d) Some of the solution was spilled after the solute and solvent were mixed but before the freezing point was determined.
what is the density of a piece of metal if it's mass is 201 g and its volume is 18.9 cm3
In the following reaction, how many moles of the non-limiting reactant are in excess if 4.4 mol Al are combined with 2.7 mol HCl
What mass of potassium can be produced by the reaction of 215 g Na with 296 g of KCl?
How many atoms of neon occupy a volume of 14.3 L at STP.
Compute the mass of H 2 O formed when 22 grams of propane are burnt if 4.4grams of propane are burnt in excess O2 7.2g of H 2 O are formed.
An aqueous solution is 36.0 % by mass potassium bromide, KBr, and has a density of 1.33 g/mL. determine the mole fraction of potassium bromide in the solution?
A cylinder of oxygen gas contains 26.4 g of O2. Another cylinder, twice the volume of the cylinder containing oxygen (and at the same conditions of pressure and temperature), contains CO2 gas.
If the titrant has a molarity of 0.2750 M and there are 25.00 mL of analyte present, what is the molarity of the analyte?
A sample of neon is collected at 2.7 atm and 12.0 oC. It has a volume of 2.25 L. What would be the volume of this gas at STP?
Calculate the molar solubility of Cu(OH)2, Ksp = 2.2 × 10-20, in 0.82 M NH3. Don't forget to use the complexation reaction Cu2+ + 4 NH3 ? Cu(NH3)42+, K = 5.0 × 1013.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 57.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 255.0 mL of solution.
A goose is flying south for the winter at a constant speed. Keep in mind that one mile is 1.61 , and one pound is 454 .The goose has a mass of 20.1
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