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a) Given that the molar mass of H3PO4 is 97.994 grams, find out the number of grams of H3PO4 needed to prepare 1.20 L of a 0.8 M H3PO4 solution.
b) Explain what volume in liters of a 0.8 M H3PO4 solution can be prepared by diluting 50 ml of a 3.5 M H3PO4 solution?
Draw the product of the reaction of cyclopentanone with hydroxylamine. Draw the product of the reaction of cyclopentanone with hydrazine
calculate the energy in joules of a single photon associated with the frequency. Eneter your answers in scientific notation.
NaOH is needed to reach the endpoint pH of 3.5. Show whether the experimental value of ANC agrees with the therorectical value determined in part c.
What is the horizontal component of the traction force acting on the leg? (c) What is the magnitude of the force exerted on the femur by the lower leg
at 25 degc the equilibrium partial pressures for the following reaction were found to be pa 8.00 atm pb 5.40 atm pc
P2.36) A pellet of Zn of mass 31.2 g is dropped into a flask containing dilute H2SO4 at a pressure P = 1.00 bar and temperature T = 300. K. What is the reaction that occurs? Calculate w for the process. Ans. w = -1190 J
the volume of a gas is 93 mL when the temperature is 91C. If the temperature is reduced to 5C without changing the pressure, what is the new volume of the gas?
Consider a 20 mol % mixture of hexane (P°=72kPa) in toluene (P°=35kPa). Calculate the fraction of hexane molecules that reside in the vapor above the solution.
an air conditioner operating at steady state takes in moist air at 28degc 1 bar and 70 relative humidity. the moist
What is the molar composition of the dense gas and it's chemical formula? What is the element name and identity and atomic mass of the grey substance
Stalactites--the long icicle, icicle like formations that hang from the ceilings of caves--are formed from recrystallizing minerals like calcite (calcium carbonate, CaCO3, 100.09 g/mol). The Ksp of calcium carbonate is 4.5 x 10^-9.
What is the power output of the turbine? H1= 1322.6 Btu/lbm v1=3.058 (ft)^3/lbm H2= 1148.6 Btu/lbm v2=78.14 (ft)^3/lbm
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