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"A solid phosphorus pentabromide (PBr5) is formed from solidphosphorus (p4) and liquid bromine (Br2) according to the followingbalanced equation:P4 (s) + 10 Br10 (l) --------> 4PBr5(s) How many grams of PBr5 is formed from 31.0 grams of phosphorus and 154 mL of bromine? Density of Br2 = 3.12 g/ ml? How many grams of the excess reactant will be leftover?"
Calculate the mole fraction of total ions in an aqueous solution prepared by dissolving 0.400 moles of MgCl2 in 850.0 g of water.
When mixed with water, t-butylmethylether will be in which layer. Top Bottom Neither Both
a) if you make up a solution of 50mL of 0.1M TRIS in the acid form, what will be the pH. b) If you add 2mL of 1M NaOH to the solution, what will be the pH
Ammonium nitrate is a common ingredient in chemical fertilizers. Use the reaction shown to calculate the mass of solid ammonium nitrate that must be used to obtain 0.200 L of dinitrogen oxide gas at STP.
Complete combustion of a hydrocarbon is a reaction where oxygen reacts with the compound to yield carbon dioxide and water. What is the correct balanced equation for complete combustion of CH4
calcium and the human body normally contains 6 quarts of blood, what mass of calcium (in grams) will be found in the total blood volume?
If everyone in the world (population 7 x 10^9) wanted to heat up the water for a 20oz cup of coffee (from 20deg C to 95deg C) using natural gas, how many Kg of CO2 would be produced
assuming that the total pressure of the gases is 1.52 atm and that their mole ratio is 94 4.0 1.5 0.50 calculate the
If aqueous acetone (80% acetone, 20% h2o) is used as the extraction solvent instead of 100% acetone, the extraction yields of chlorophyll a and beta carotene
A solution contains 0.021 M Cl? and 0.017 M I?. A solution containing copper (I) ions is added to selectively precipitate one of the ions. At what concentration of copper (I) ion will a precipitate begin to form? What is the identity of t..
1000g of Na2HPO4 is dissolved in 100mL of water. using mass balance and charge balance deterimne the pH of the resulting.
The following reactions occur at 500 K. Arrange them in order of increasing tendency to proceed to completion (least ? greatest tendency). 1. 2NOCl 2NO + Cl2 Kp
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