Calculate the ph of a solution that is formed ammonia
Calculate the pH of a solution that is formed when 25.0 mL of 0.24 M ammonia (Kb = 1.8 x 10-5) is mixed with 25.0 mL of 0.20 M ammonium chloride.
(A) 2.83 (B) 4.67 (C) 9.17 (D) 9.33 (E) 11.17
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Gallium has an atomic mass of 69.7 amu. In a typical sample, 60.4% of Ga exists as Ga-69 (68.9257 amu). What is the identity and the atomic mass of the other isotope?
A box weighing 77.0N rest on a table. a rope tied to the box runs vertically upward over the pulley and a weight is hung from the other end. Determine the force that the table exerts on the box if the weight hanging on the other side is 30.0N
How many grams of potassium permanganate are needed to decolorize 1 g of 2-pentene in basic solution?
Identify the oxidizing agent and the reducing agent for rm Ba(s) + Cl_2(g) to BaCl_2(s)?
There are graphs of Percent Transmittance vs Concentration and Absorbance vs Concentration. Which of the two concentration graphs will appear to represent a straight line function the best? Explain.
What is the equation for the reaction of cyclohexene wtih MnO4- to form 1,2-cyclohexanediol and MnO2 in a basic medium?
What is the wavelength (in meters) of a proton ({rm{mass}} = 1.673 times 10^{ - 24} {rm g}) that has been accelerated to 30% of the speed of light?
The product ethane (C2H6) has a volume of 58.0 mL. Calculate the amount of PV work done, and tell the direction of the energy flow.
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