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Using a pipet, 10 mL of a 0.6505 M acetic acid solution was placed in a 250 mL volumetric flask and the flask filled to the mark with water. What is the concentration of the new, diluted solution?
What is the pressure (in atmospheres) of a sample of gas trapped in the closed-tube mercury manometer
Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC Delta T to calculate the temperature change of the 304 g of water.
what is the change in pH after addition of 10.0mL of 1.0M sodium hydroxide to 90.0mL oof a 1.0M NH3/1.0M NH4+ buffer? (Kb for ammonia is 1.8 X 10-5)
Acetylene gas (C2H2) is produced as a result of the reaction CaC2(s)+2H2O(l)-> C2H2(g)+Ca(HO)2(aq) if 13g of CaC2 are consumed in this reaction, how much H2O is needed?
Molecular weight and mole concept explained in this solution, The molecular weight of NaOH is 40. the molecular weight of a widely used buffer, HEPES, is 255
Calculate the equilibrium constant for the reaction
what precipitate would form if calcium chloride, 5% dextrose, 0.9% sodium chloride, and potassium phosphate
Three resonance structures of the following cation are possible. One resonance form is given below, but it is incomplete. Complete the given structure by adding non-bonding electrons and formal charges where necessary
Two vessels are labeled A and B. Vessel A contains NH3 gas at 73 degrees C and vessel B contains Ne gas at the same temperature. If the average kinetic energy of NH3 is 7.1 10-21 J/molecule at 70 degrees C.
what is the classification of each reactant as metal or nonmetal?
A corrosion potential of -0.299 V versus SCE was measured for a corroding alloy. what was the potential versus SCE?
Compare your answers with the following: the effective charges on H and Cl in the HCl molecule are +0.178 and -0.178. A. HBr has a smaller dipole moment and a longer bond length than HCl
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