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how many grams of SO2 are required to treat 3.00x10^8 L of 0.0750 mM Cr(VI)? 2CrO4+3SO2+4H yields Cr2(SO4)3+2H2o
Calculate the attractive force (in Newtons) between a cation with a valence of +3 and an anion with a valence of -2, the centers
Silver metal crystallizes in a face-centered cubic lattice whose unit cell has sides 409 pm long. Use this info and the atomic weight to calculate the density of silver
Important information about pH and Molarity, You add 5 drops of .100 M HCl to 100ml of "pure" water. Assuming that the volume of one drop is .035ml, calculate the expected pH of the resulting solution
The mass of a 150 ml beaker was determined to be 82.123 g. A sand- salt mixture was placed in the beaker and the mass of the beaker plus the mixture was determined to he 86.246 g.
Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution.
Assuming that the heat capacity of the ammonuim chloride solution is 4.18J/gc, calculate the heat (enthalpy) of the solution NH4Cl, (a) in J/g and (b) in kj/mol.
draw the mechanism for the ammonolysis of benzoyl chloride
The reaction 2NO (g)-> N2 (g) + O2 (g) has a H = 180.5 kJ. How much heat will be required to produce 44.8 L of NO by the reverse reaction?
Approach the tank slowly and carefully carrying full face mask with portable oxygen. The characteristic odor will be evident if leaking then put on the PPE.
What effect would there be on the calculated value for the molar enthalpy of dilution if the technician accidently used too much water so that the volume was actually more than 500 mL.
When a solution of a certain gadolinium salt ie electrolyzed with current of 1.0 A for 2.0 h, 0.025 mol of Gd metal forms. Calculate the charge on the gadolinium ion in the salt
the ternary compounds called chlorofluorocarbons, or Freons, have proved to be very valuable as refrigerants and as cleaning agents for circuit boards. Unfortunately, in the atmosphere these compounds produce chlorine atoms that catalyze the decom..
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