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A perfect cube of aluminum metal weighs 20.00g. The density of of aluminum is 2.70 g/ml. What are the dimensions of the cube?
Consider a solution formed by mixing 51.0 mL of 0.100 M H2SO4, 27.0 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 25.0 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH. Calculate the pH of this solution.
The mass of purified sample of impure benzoic acid was .630g. How would I find the percentage recovery of my impure benzoic acid? And are the numbers I got in the lab reasonably correct?
The Debye-huckel limiting law is more reliable for 1:1 electrolytes than for 2:2 electrolytes
When equilibrium is established, it is found that the partial pressure of ammonia has increase by 12.4%. Calculate K for the decomposition of NH4HS at 25 degrees C.
Calculate the Standard Enthalpies & Standard Entropies for each reactant & product at the temperature given first, then determine the ?H°rxn and ?S°rxn at 1600 K Zr(beta) + O2 = ZrO2(beta) Other information:
Suppose 312 grams of methylamine and 475 grams of oxygen are mixed together. How many grams of water should be produced?
A buffer (pH 3.70) was prepared by mixing 1.00 mole of formic acid and 1.00 mole of sodium formate to form an aqueous solution with a total volume of 1.00 L. To 400 mL of this solution was added 50.0 mL of 1.00 M NaOH. What is the pH of this solut..
describe how will you prepare a supersaturated solution of potassium nitrate in water.
how many moles of oxygen are present in 1.500 liters of oxygen gas?
A water sample has a pH of 8.21 and a total calcium concentration of 143 ppm. What is the total alkalinity of the water?
Suppose a 500 mL solution contains 0.50 millimoles of Co(NO3)2, 100.0 millimoles of NH3, and 175.0 millimoles of ethylenediamine. What is the concentration of Co 2+ (aq) in the solution?
What volume (L) of H2 at 745 torr and 20.oC can be prepared from 4.8 g of water? (Atomic weights: Fe = 55.85, O = 16.00, H = 1.008; 1 atm = 760 torr).
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