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The following solutions were mixed together: 50.0mL of a 0.761M FeSO4 and 20.0mL of a 1.05M K2Cr2O7 (in dilute sulfuric acid). What is the molar concentration of Cr+3 ions in the resulting solution?
The fat, tripalmitin, when hydrolyzed with aqueous NaOH followed by acidification with HCl yields glycerol and palmitic acid.
At a certain temperature the equilbrium constant is 396 K for H2(g) + I2(g) ↔ 2HI(g) , Calculate the the equilbrium constant for 0.5H2(g) + 0.5I2(g) ↔ HI(g)
A point mass rotates in a circle with l = 2. Calculate the and the possible projections of the angular momentum on an arbitrary axis.
A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.
a 0.20 solution of is used to titrate 28.0 of a solution of unknown concentration. if 160ml of hcl is required what is
Explain how this model can be used to reduce the number of dangling bonds from 49 (unreconstructed) to 19 (constructed). B. Explain the origin of the name dimer adatom stacking fault.
Calculate the concentration of each ion present in a solution that result from mixing 50 mL of a .20 M NaCLO3 solution with 25 ml of a .20 M Na2SO4. ASsume that the volumes are additive.
Twenty-five mL of 0.150 M hydrofluoric acid, HF, is titrated with 0.100 M potassium hydroxide. What is the pH of the acid initially (before any base is added)?
do not specify stereochemistry. (The absolute stereochemical configurations of chiral substances cannot be determined from the data.)
a 100. ml sample of 0.200 m aqueous hydrochloric acid is added to 100. ml of 0.200 m aqueous ammonia in a calorimeter
a box contains 126000 red marbles and 885000 yelllow marbles. What sample size is required to reduce the sampling standard deviation of red marbles to 1.85%
Hydrogen bromide adds to the triple bond with a regioselectivity dictated by Markovnikov's rule. One mole of HBr adds to one mole of 1-heptyne.
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