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A solution of Ba(OH)2 has concentration of 0.125M. What is the hyrdronium ion concentration? What is the pH?
If every tablet in the problem abouveweights 650 mg. How many kilograms of excipient (lactose/talcum powder/filler) are needed to complete the whole batch?
2NO(g) + O2(g) 2NO2(g) Given that we start with 0.035M NO(g) and 0.035M O2(g) AND end with 0.012M NO2.
A compound of potassium had the following percentage composition: K 44.90%; H 0.5787%; P 17.78%. The rest was oxygen. Calculate the empirical formula of this compound
What mass of CaCl is needed to make 350 mL of a 0.233M CaCl solution?
the reaction rate does not change when [B] increases from 1 M to 2 M. Which of the following is the correct rate law for the reaction?
Describe and explain the possible effect on your results of the following experimental errors or variations. (a) You stopped the steam distillation after collecting 3 mL of distillate
Potassium metal reacts violently when added to water according to the balanced equation: 2K(s) + 2 H2O (I) > 2KOH(aq) + H2(g). How many moles of H2O are needed to react completely with 7.54 mol of K
Assuming that equilibrium has been reached, calculate Kc and Kp for the reaction.
Determine the pH and the percentage of fully protonated weak acid/base for each of the solutions listed below:
Is sodium prechlorate an aques solution. And also, how do you differentiate a solid, liquid, gas, and aquesous solution just by the equation
A 0.170 mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2+ ions at equilibrium. Assume the formation constant of Ni(NH3)6 is 5.5 x 10^8
Calculate the change in entropy that occurs when 18g of ice at -10C is placed in 54g water at 100C in a perfectly insulated vessel. assume that the molar heat capacity for h2o (s) is 38 J/Kmol and for h2o(l) is 76 J/Kmol and themolar entropy of su..
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