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sketch a heating curve for a substance x whose melting point is 40oc and whose boiling point is 65oca describe what you
in which of the following substances would you expect to find hydrogen bonding explain your reasonsa c2h6b nh3c h2od
deduce the numerical value of x in the formula mocox explain the rationale for your chosen value of x hint consider
compare the molar solubility of agoh in pure water with that in a solution buffered at ph 700 note the difference
the formula conh35co3cl could represent a carbonate or a chloride write the two formulas draw the two structures and
can someone please give me an example of the balanced redox equation for cu2 from one of the qual i cations an
identify the qual i cations that is are confirmed present in a test solution by the formation of a
fertilizer is made by mixing equal masses of potassium nitrate kno3 and ammonium phosphate nh43po4 what is the mass
q1 if a mixture of compounds of widely different volatilities is to be analysed by gas chromatography what sort of
in which one of the following aqueous solutions would you expect silver i bromide to have the lowest solubility and
given a buret filled with 012m acetic acid and a second buret filled with 015m sodium acetate how many milliliters of
a 2010-3 m solution of manganese ii sulfate is gradually made more basic by the addition of a 10 m solution at what ph
a saturated solution of lead ii bromide is prepared by dissolving the solid in water the concentration of lead ii ion
1when heated calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reactioncaco3 ---gt cao
what would be the advantages of the internal standard calibration method and explain why the technique works so well in
using standard potentials given in the appendices calculate the standard cell potentials and the equilibrium constants
a solution is made by dissolving 0150 moles of benzoic acid ka6510-5 and 0300 moles of sodium benzoate in enough water
which of the following clusters of orbitals would form the shape shown here part b 1 figure either through the
why is the injectordetector temperature set at 180 c while the column temperature is only at 90 c and why is it
what is the molecular geometry of a molecule with 4 outer atoms and 2 lone pairs on the central
1 a 12-liter tank contains helium gas pressurized to 160 what size tank would be needed to contain this same amount of
150 moles of gas are in a 700 tank at 200 calculate the difference in pressure between methane and an ideal gas under
assume that you have a cylinder with a movable piston what would happen to the gas pressure inside the cylinder if you
a 4218 g sample of water initially at 202 c absorbs 5619 kj of heat what is the temperature of the water after
the reaction of phthalimide with sodium hypochlorite gets a product that had the molecular formula of c7h7no2