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Describe how you would prepare 500 mL of a 1.0 M solution of phosphoric acid from 85.0% phosphoric acid that is pure. The gram formula weight of phosphoric acid is 98.00 g/mol, and the density of 85.0% phosphoric acid is 1.685 g/mL.
If water had not been added to your initial product, what error in the percentage magnesium determined would have resulted(that is if the part of the product has been magnesium nitride)? Explain.
If hydroxide ion is formed, the OH- may react with some of the Fe3+ to produce an insoluble hydroxide. Will the percent yield of the iron (III) compound containing a complex ion be affected by the formation of the insoluble hydroxide
Approach the tank slowly and carefully carrying full face mask with portable oxygen. The characteristic odor will be evident if leaking then put on the PPE.
The reaction is first order, and the rate constant is 6.70x10^-4 s^-1. If the initial concentration of cyclopropane is .0577 M, what is the molarity of it after 37.2 minutes?
Problem- When Mr.Spock left Vulcan, he had a 50.00g sample of radioactive element Q which has a half life of 24.50 days. His spaceship traveled at twice the speed of light (warp 2). Upon arrival on earth he only had 0.50g of Q remaining. if the sp..
During the electrolysis of an aqueous solution of CuSo4 using inert electrodes, the mass of the anode remains the same but the cathode gains mass
millimoles of H+ in oxalic acid given the weight of oxalic acid (H2C2O4.2H2O) to be 0.2354
when the cations Na+ K+ Cs+ are combined with chloride ion in the gas phase to form ion pairs, which pair formation releases the greatest amount of energy? KCL or RbCl, or NaCl or CsCl.
As a technician in a large pharmaceutical research firm, you need to produce 200. of 1.00 potassium phosphate solution of = 7.26. The of is 7.21. You have 2.00 of 1.00 solution and 1.50 of 1.00 solution, as well as a carboy of pure distilled . How..
The rate constant (K) for a reaction was measured as a function of temperature. A plot of ln K versus 1/T (in K) is linear and has a slope of -9.50×10^3 K. Calculate the activation energy for the reaction.
The heat of fusion of ice is 335 j/g. When 50 gram of ice at 0 degree C is added to 50 gramm of water at 25 degree C, what is the final temperature
How do I know if an E1 or E2 reaction is exothermic or endothermic overall. Can it ever be endothermic? If so, when. All the examples I've seen are exothermic.
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