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
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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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