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Calculate the minimum concentration of Cr3+ that must be added to 0.095 M NaF in order to initiate a precipitate of chromium (III) fluoride ( for CrF3, Ksp = 6.6 X 10^-11)
Draw a phosphatidylglycerol that has caproic acid and cis-9 hexadecanoic acid. Draw and name the lipid which contains shingosine and stearic acid
What is the molecular formula of the compound with empirical; formula C5H8O and molar mass 336.5 g mol-1?
what must a solute's distribution ratio be if 99% of the solute in a 50ml sample is to be extracted with (a) a single 50 ml portion of an organic solvent. (b)two 25 ml portions of the organic solvent
Describe why barium must be disposed of properly. What are the health effects of excess barium in drinking water? What is the maximum allowable concentration of barium in public water systems?
how many grams of MgCl2 are contained in 225mL of a 0.650 M solution
An analysis showed that 25.0 g of this hydrate, CoCl 2 * 6 H 2 O, contains 11.3 g of water. What is the percent water by weight in this hydrate?
When is the standard enthalpy of a reaction for which the equilibrium constant is doubled,when the temperature is increased by 10 K at 298 K
The products were collected and had the following masses: CO2: 1.707 g N2: 0.136 g H2O: 0.7859 g For this compound (CaHbOcNd) what are the integers a,b,c and d in the empirical formula
If deep ocean water were stored in the laboratory, how would its pH, its alkalinity concentration and it's CO3^-2 concentration change under the following conditions? 1.) At 5C, 1 atm pressure? 2.) At 20C, 1 atm pressure?
What IR peaks of your cyclohexanone product are characteristic of the ketone group? What IR peaks of cyclohexanone will indicate it is impure? for a carboxylic acid, such as adipic acid?
Calculate the pressure in the flask in atmospheres and torr also If the sealed-tube manometer in had a height difference of 20.0 inches between the Hg levels?
At 320 K and 16 atmospheres, the molar volume of ammonia (NH3) is about 10 % less than that of an ideal gas. Explain this observation.
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