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100.0 mL of 0.400 M CoCl2(aq) is mixed with 100.0 mL of 1.600 M NaOH. Determine the moles of precipitate which form, and the molarity of each ion (including spectator ions) after the precipitation process is complete.
Now add 30.0 mL of 0.500 M ethylenediammine to the above solution. How many moles, if any, of precipitate will remain?
Kf,[Co(en)3]2+=8.7x10^13
Calculate the volume of concentrated HCL (37% by weight, density 1.19 g/mL) that must be added to 500 mL of .10 M ammonia to make
Table salt is comprised of sodium (symbol Na) and chlorine (symbol Cl) in a simple one to one ratio. It is written in chemical shorthand as NaCl. How would you go about finding approximately how much salt there is in our body?
How many moles of gas are there in a 45.0 L container at 25.0 degrees Celcius and 500.0 mm Hg
A bone sample with 2.8 g of carbon has 17.4 disintegrations per minute. How old is the bone sample in years. What percentage of the atoms of carbon in the biosphere are C-14?
Which is the correct arrangement of types of radiation when ordered in decreasing energy per photon. a. Radio waves, microwave radiation, ultraviolet light, X-rays
At what Kelvin temperature will the reaction proceed 3.50 times faster than it did at 351 K?
A 2.60-L vessel contained 0.0160 mol of phosphorus trichloride, 0.0115 mol of phosphorus pentachloride, and 0.0903 mol of chlorine at 180°C in an equilibrium mixture. Calculate the value of Kc for the following reaction. PCl3(g) + Cl2(g) PCl5(g)
Chromatographic column, it is important to let the level drop in the column eluent to the level of the sand before applying the solution of the compound to be separated. What effect would have on the efficiency of separation ignore this recommenda..
When setting temperature scan program of Diffrential Scanning Chromatography,
Based on the two balanced reaction equations, find the ?G for the complete oxidation of one ethanol to two CO2 molecules.
When 2.00 g of hydrazine decomposed under constant-pressure conditions, 7.00 kJ of heat were transferred to the surroundings. What is delta H for the following reaction? 3 N2H4(l) --> 4 NH3(g) + N2(g)
The activation energy of an uncatalyzed reaction is 91kJ/mol . The addition of a catalyst lowers the activation energy to 61 kJ/mol .Assuming that the collision factor remains the same, by what factor will the catalyst increase the rate of the rea..
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