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A compound of P and F was analyzed as follows: Heating 0.2324 g of the compound in a 378-cm3 container turned all of it to gas, which had a pressure of 97.3 mmHg at 77°C. Then the gas was mixed with calcium chloride solution, which converted all the F to 0.2631 g of CaF2. Determine the molecular formula of the compound.
Before running your reaction, you determined that the mixture amount of product you could obtain was 3.74 g. However, after completeing your reaction the mass of product obtained was only 2.486 g. What mass is your theoretical yeild. What is your ..
What will happen to the number of moles of SO3 in equilibrium with SO2 and O2 in the reaction 2SO3(g) 2SO2(g) + O2(g)
Suppose of nickel (II) bromide is dissolved in of a aqueous solution of potassium carbonate. Calculate the final molarity of bromide anion in the solution
If an intravenous solution containing 123 mg of a drug substance in each 250-mL bottle is to be administered at the rate of 200mcg of drug per minute,how many milliliters of the solution
Would the presence of a nitro group in the 4- and 4'- positions in benzophenone increase the frequency of the carbonyl stretch or decrease it? Explain using resonance structures.
Determine the moles of NaOH b. Determine the moles of HCl c. Calculate the concentration of HCl
What is the approximate value of the equilibrium constant, Kn, for the neutralization of hydrochloric acid with sodium hydroxide, shown in the equation below? HCL(aq) + NaOH(aq) --> H2O (l) + NaCl (aq)
Calculate the entropy change for vaporization of 18 g of H2O. The molar enthalpy of vaporization for water is 44 kJ/mol and the boiling point
Suppose that a student performed the experiment and the calculations perfectly except for the following. Unknown the student, Cu (NO3)2•3H2O instead of CuSO4•5H2O was used to make up the known Cu 2 solution
Determine the mean and 90% confidence interval for the average fluoride concentration in this sample.
35 mL air sample collected at 31 C has a pressure of 575 torr. What pressure will the air exert if it is allowed to expand to 476 mL at 56 ? C? Answer in units of torr.
A 50.0-g piece of metal at 203oC is dropped into 400.0 g of water at 25.0oC. The water temperature rises to 29.0oC. Calculate the specific heat of the metal (J/goC). Assume that all of the heat lost by the metal is transferred to the water and no ..
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