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Calculate the molarity and mole fraction of acetone in a 1.82 molality solution of acetone in ethanol. Density of acetone is .788 g/cm^3. Density of ethanol is .789 g/cm^3. Assume that the volume of acetone and ethanol add.
Find the mass of the substance and the volume of a gas in a reaction - determine the mass of solid ammonium nitrate that must be used to obtain 0.145 L of dinitrogen oxide gas at STP.
next titrates an unknown sample with this DCP solution and reaches the end point at 40.5 mL. How many mg of ascorbic acid were present in the unknown sample
calculate the amount of solute (g or mL needed to prepare the following solutions: a) 150 g of a 40.0%(m/m)LiBr solution. b) 450 g of a 2%(m/m) KCl solution. c) 225 mL of a 15%(v/v) isopropyl alcohol solution
What is the name of the compound (NH4)3PO3? Why is special about this compound? Choose one answer. a. Ammonium phosphate; this covalent compound is made up of two polyatomic ions, ammonium and phosphate.
Calculate DG0 for the reaction below. The standard molar entropy change for the reaction at 298 K is -287.5 J/mol·K.
The initial weight of the substance was = 1.391g After the heating process weight was = .404g % mass of water is = 29.0% Class average (true value) = 29.3% Question is, what is a plausible reason for a % mass of water that is higher/lower than the..
compute the molar mass of the noble gas kryptonkr in a natural sample which is 2.2 80 kr molar mass 79.91 gmol 0.84 78
Vitamin b6 is needed in the metabolism of amino acids. When it binds to an enzyme it forms a complex with the e-amino group of lysine, which is a primary amine.
A specific brand of gourmet chocolate candy contains 7.00 g of dietary fat in each 22.7 g piece. How many kilograms of dietary fat are in a box containing 3.00 lb of candy? Express your answer numerically in kilograms.
The determination of iron in industrial waste stream is often carried out by reacting the water sample with o-phenanthroline to form a red-orange complex that absorbs at 510 nm.
If the desalination plant wants to produce 1400.0 gallons of drinking water per day, how many gallons of brine must the plant take in per day. The density of fresh water is 1.000 g/cm3. The density of brine is 1.025 g/cm3. What mass of waste brine..
what would be the concentration in the pond (and outlet stream) after 2 days? Inlet and outlet flows are both 280 m3 per day.
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