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A 25.0-mL sample of 0.150 M butanoic acid is titrated with a 0.150 M NaOH solution. What is the pH before any base is added? The Ka of butanoic acid is 1.5 x 10-5.
The temperature of Beaker X = 75°C and the temperature of Beaker Y = 50°C after Five minutes . determine the temperatures be after another 5 minutes have passed?
A flask contains a mixture of Ne(g) and Ar(g). There are 0.250 mol of Ne(g) which exerts a pressure of 205 mmHg. If the Ar(g) exerts a pressure of 492 mmHg.
Compute the mass of H 2 O formed when 22 grams of propane are burnt if 4.4grams of propane are burnt in excess O2 7.2g of H 2 O are formed.
Calculate the volume of a chromium atom in microliters if the volume of a single chromium atom(Cr) =8.10E-24 cm 3 and determine how many copper(Cu) atoms would there be in 159 milligrams of Cu if The mass of a single Cu atom = 1.06E-22 grams.
it is observed that a volume of 29.15 mL of KOH was neede to complete the process of titration. Determine what is the concentration of this unknown HCl solution?
Compute the number of moles of H2O will be formed from the reaction 75.1g benzene?
A reaction 3A2+ + 2B --> 3A + 2B3+ is used to make a battery. The standard Gibbs free energy change for the given reaction is -690 kJ. What is the standard potential (E ) for the battery.
Consider the following reaction: CO + 2H2= CH3OH, kp= 2.26 x 10^2 at 25C . Calculate delta G for the reaction at 25C under each of the following conditions.
What are the concentrations of each of the ions in a saturated solution of PbBr2, given the Ksp of PbBr2 is 2.1 x 10^-6?
Compute the value of ΔH ° if the combustion products are CO2 (g) and H2O (g). it isgiven that: CO 2 (g) = ΔHf ° - 393.5 kJmol-1; H 2 O (l) = ΔHf ° -285.8 kJmol-1; H 2 O (g) = ΔHf ° -241.8 kJmol -1.
CHEM 354 Extended Problems, The variation of EMF for the cell below with temperature is shown in the graph below.
Determine the final concentration and Determine What mass of Ar is needed to exert half the pressure (at the same conditions of volume and temperature)?
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