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The molar nuclear mass of fluorine-19 is 18.99840 g/mol. The molar mass of a proton is 1.007825 g/mol. The molar mass of a neutron is 1.008665 g/mol. Calculate the binding energy (in J/mol) of F-19. (c=2.998 x 10^8 m/s)
Calculate the number or calories of heat energy required for warming 34.6g of water from 18.9 celsius to 29.9 celsius
For the cell reaction: Cu(s) + 2Fe3+ ? 2Fe2+ + Cu2+ Ecell° = 0.33 V What is the value of the equilibrium constant at 25°C for the cell reaction
A buffer solution with a pH reading a 8.50 was prepared by mixing 0.25 mole acid (HA) and 0.05 mile NaOH in 500.0mL DI water. How much more gram of NaOH you should add to this solution in order to have the highest buffer capacity of this solution
What is the theoretical yield of aspirin if 190 kg of salicylic acid is allowed to react with 128 kg of acetic anhydride?
Consider the reaction of an aqueous solution of KOH with an aqueous solution of HC2H3O2. Which of the following should appear on the product side of this reaction
Use the rydberg equation to calculate the wavelength in nm of the photon when an electron in a hydrogen atom undergoes a transition from n=6 to n=2
Calculate the diameter of a methane molecule with a van der waals value of .069L/mol for the excluded volume b. I got the answer to be 3.01A and was just wondering if I was right or wrong
A solution of acid was found to have a hydrogen ion concentration of 0.03 mol dm-3 what is the pH of the solution?
A mixture of gases contains 4.32 g of Ar, 7.88 g of BF3, and 4.86 g of N2. What is the partial pressure in atm of each component of this mixture if it is held in a 61.3-L vessel at 10.9 oC? Use R = 0.0821 L-atm/mol-K as the value of the gas consta..
Consider a carbon atom in its ground state. Would such an atom offer a satisfactory model for the carbon of methane? If not, why not
when 142 grams of calcium flouride are reacted with an excess of sodium bromide, calculate the mass of calcium bromide formed.
linear polystyrene has phenyl groups that are attached to alternate not adjacent carbons of the polymer chain
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