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Consider the following unbalanced reaction.P4(s) + F2(g) -> PF3(g)How many grams of F2 are needed to produce 120. g of PF3 if the reaction has a 78.1% yield?
The oxidation of gold metal by aqua regia (i.e., royal water) results in the production of nitrogen dioxide and gold(III) ion, in the primary step. Aqua regia is a dangerous mixture of 1 part nitric acid and 3-9 parts hydrochloric acid.
what is the molar mass of the acid? If the standardization of the NaOH solution, why is it important to rinse the wet pipet with small portions of the standard oxalic acid solution
a molar heat capacity at constant volume of 3/2R initially at 298K and 10l is expanded with the surroundings maintained at 298K to a final volume of 20L in three ways ways a) isothermally and reversibly b) isothermally against a constant extenal p..
The equilibrium constant for the interconversion of PCl5 and PCl3 is 0.0121: PCl5 = PCl3+Cl2. A vessel is charged with 0.123 mol PCl5. At equilibrium what is the concentration of PCl3
standard-state free energy of formation data to calculate the acid-dissociation equilibrium constant
The rate of the reaction doubles when the concentration of CH3Cl is doubled and it quadruples when the concentration of H2O is doubled. What is the unit for K?
Determine the empirical formula of each of the following compounds. (Type your answer using the format CH4 for CH4 and list the elements in the same order as they are mentioned in the problem.)
A common way to determine CEC of a soil is to saturate the CEC with NH4+ ions. If a soil holds 286mg
The amount of heat needed to raise the temperature of 25 g of a substance by 15°C is 915 J. What is the specific heat of the substance?
A 1.3 g sample of C3H6O is burned completely in excess oxygen to yield CO2 (g) and H2O (l) at 25 C, releasing 41.4 kJ of energy. What is the enthalpy of formation of C3H6O?
You are given 2.72 g of salicylic acid. Using the procedure in the lab manual for the synthesis of aspirin, you recover 0.96 of aspirin. Calculate your percent yield of aspirin.
predict whether a reaction will occur in each of the following. if so write the balanced chemical equation as well as the net ionic equation. Phases are all required for all species.
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