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Calculate the amount of CaCl2 in grams that would have to be dissolved in 100ml of solution to produce a solution with an osmotic presure of 300mOsmola assuming that the solute is fully ionised.
Concentrated acetic acid is a Class II combustible liquid. What is the molecular weight of acetic acid that will form 2 moles of CO2 assuming complete combustion?
calculate the moles of aluminum ions present in 250.0 g aluminum oxide.acetaminophen a common aspirin substitute has
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.100M solution of ammonia, NH3, to prepare a buffer solution that ahs a pH of 8.80?
thomas poured 25 mL of 0.50 M HCl into a large bottle. He then added enough water so that the new (diluted) concentration was 0.10 M HCl. How much water did Thomas add?
The decomposition of ozone in the upper atmosphere is facilitated by {\rm NO}. The overall reaction and the rate law are O3(g) + O(g) = 2 O2(g) Rate = k [ O3}][ NO]
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.049 M in NH4Cl
using a flow diagram show the separation of a mixture containing p-bromoacetanilide
When 0.204 moles of (NH4)3PO4 in enough water to make 1.00 L of solution, what is the total concentration of all ions present in solution?
Given the following unbalanced chemical equation: Al + Cl2-> AlCl3 (a) Balance the equation. (b) How many moles of AlCl3 are produced from 2.75 mole of Cl2 (c) What is the molar mass of AlCl3 (d) Calculate the number of grams of AlCl3 produced from..
How many grams of formic acid, HCOOH, must be added to 0.160 L of 0.150 M sodium formate, HCOONa, to yield a buffer solution with a pH of 4.30? Assume no volume change. Ka of HCOOH = 5.0 10-4.
How much heat do you need to raise the temperature of 150 g of gasoline from 30oC to 15oC?
the solubility of kcl in h2o 34.0 g kcl100 g h20 at the temperature of twenty degree celsius. a solution warm having
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