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PJ's unknown solid 1) dissolves in hot ethanol, 2) is essentially insoluble in hexane, and 3) is insoluble in cold water, but sparingly soluble in warm water. Outline the recrystallization procedure you would suggest she use here.
Nme the phenol with two chlorines
You are given a box containing at equilibrium at 1000 K 0.102 moles/liter NH3, 1.03 moles/liter N2, and 1.63 moles/liter H2 for the reaction N2(g) +3 H2(g)-->/
Select each side of the mass balance equation for an Fe3(PO4)2 solution where the existing species are Fe2 , PO43-, HPO42-, H2PO4-, H3PO4, FeOH?
It takes 10 microliters to produce a spot 1cm in diameter. If Co(No3)2contains 6 g Co2+ per liter how many micrograms of Co2+ ion are there in one spot?
what is the concentration of nh3 in a solution if 20.0 ml of a 0.1145 m solution of hydrochloric acid are required to
calculate the final temperature of 36 rm ml of ethanol initially at 16circ rm c upon absorption of 750 rm j of heat.
When one mole of aluminum reacts with excess oxygen how many moles of aluminum oxide will be produced? When one mole of oxygen reacts with excess aluminum how many moles of aluminum oxide will be produced? When one mole of aluminum reacts with one mo..
In a particular photoelectron spectrum using 21.21 eV photons, electrons were ejected with kinetic energies of 11.01 eV, 8.23 eV, and 5.22 eV. Sketch the molecular orbital energy level diagram for the species, showing the ionization energies of th..
In certain part of the country ,there is an average of 710 people per square mile and o.72 internet services per person . what is the number of internet services in an area of 5.0km square?
A calorimetry experiment determined that the combustion of 1.01 g of H2 reacting with excess O2 producing H2O gave q=143 kJ. Calculate the change in enthaply.
What is the mass of the solid NH4Cl formed when 73.0 g of NH3(g) are mixed with an equal mass of gaseous HCl? What is the volume and identity of the gas remaining, measured at 14.0°C and 752 mmHg? (8 points)
What are the percentages of each molecular ion? (List to nearest 1% in order of increasing mass separated by commas, e.g. 55,45.)
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