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The absorbance value at 690 nm at a particular temperature for a solution containing CoCl4 ^2- is 0.744. the concentration of the sln containing CoCl4 ^2- is 0.0105M.
A) What is the concentration of CoCl4 ^2- in this colution at this temperature?
B) What is the concentration of CO2= in this sln at this temp?
Calculate the mass(in grams) of solids you must measure out to prepare 100 mL each of 0.025 M CuSO4, 0.025 M Ca(NO3)2, 0.025 M Al(NO3)3, and 0.025 M KCl.
While a single alkene monomer, such as ethylene, is polymerized, the product is a homopolymer. If a mixture of two alkene monomers is polymerized, but a copolymer often results. The subsequent structure represents a segment of a copolymer.
In the spring of 1996 five tank cars containing propane (molar mass = 44.09 g/mol) derailed in Weyauwega, WI forcing evacuation of the town for over a week. Residents within a square mile of the accident site were unable to return to their homes f..
As a chemist for an agricultural products company, you have just developed a new herbicide,"Herbigon," that you think has the potential to kill weeds effectively
Problem- An aqueous solution containing 5.35 g of an optically pure compound was diluted to 700.0mL with water and placed in a polarimeter tube 10.0 cm long. The measured rotation was -5.15° at 25 °C.
if 60.2 grams of hg combines completely with 24.0 grams br to form a compound what is the percent composition of hg in
If 28.9 grams of trans-2-butene reacts with 14.2 grams of HCl to form 15.5 grams of chlorobutane, what is the percent yield?
Write a balanced chemical equation for the reaction between Mn2O3 and CN - in basic solution. The skeleton ionic reaction is given below.
what is the concentration (in mole/L or M) of Cu2+ and NO3- in the final solution. Remember your significant figures. If there is an impurity of Cu2+ in the water you are using to perform the dilutions, what type of error is this associated with t..
compute the amount of heat required to boil 92.1 grams of benzene c6h6 start from a temperature of 42.5 degrees
The density of solid Fe is 7.87 g/cm3. How many atoms are present per cubic centimeter of Fe. As a solid, Fe adopts a body-centered cubic unit cell. How many unit cells are present per cubic centimeter of Fe
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.049 M in NH4Cl
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