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Urea, NH2CONH2, is a nonvolatile nonelectrolyte. Calculate the boiling point of a solution of 30.0g of urea in 250g of water
A solution that has a K+ concentration of 5.00ppm is to be prepared from solid KCl. Assuming a solution density of1.000g/mL how many miligrams of KCl must be added to make 1.00L solution?
Enough of a monoprotic acid is dissolved in water to produce a 0.0131 M solution. The pH of the resulting solution is 2.48.
Explanation of Ratios, In an unsymmetrical alkene, the boron atom adds predominantly to the least substituted carbon atom. For example, 2-methyl-2-butene gives the products shown below.
Calculate K for 2 NO(g) + O2(g) 2 NO2(g) from the observation that when equilibrium is established at 500 K, there are 0.190 moles NO2, 2.65 X 10-4 moles NO, and 0.606 moles O2 in a volume of 0.759 liters.
We have a refrigeration unit that works at a pressure of 0.1MPa in the evaporator and 1 MPa in the condenser. The refrigeration unit uses a compressor with an efficiency of 90% and a turbine with 100% efficiency is used to expand the refrigerant a..
Suppose your thermometer read consistently 1.0 o C lowered throughout both parts in the colligative properties lab. What effect would that have on your experimental value for the molar mass of your unknown solute?
Find the volume of oxygen - What volume of oxygen is needed to completely combust 2.07 L of methane gas
A mixture of gases contains 3.41 g of NO2, 7.62 g of BF3, and 6.50 g of NO. If the total pressure of the mixture is 5.12 atm, what is the partial pressure of each component?
Starting with pure NaCl and water, describe how you would prepare 25.00 mL of a NaCl solution? Assume you know how much NaCl you need to weigh on the balance.
Ozonolysis of A followed by dimethyl sulfide reduction produces a single optically active compound C, C5H8O2. Reduction of C with ethereal LiAlH4 affords optically active compound D (C5H12O2) of the (S)-configuration. The 13C NMR spectrum of D is ..
if 7.0 moles of sulfur atoms and 10 moles of oxygen molecules are combined to form the maximum amount of sulfur trioxide, how many moles of which reactant remain unused at the end?
Draw the kekule structure of each of the following compounds. if cis/trans isomers exist, draw both and indicate the geometry of each.
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