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If a sample of 0.188 grams of KCN is treated with an excess of HCL, calculate the amount of HCN formed, in grams.
Calculate the molarity of 52.56 grams of Al2(SO4)3 in 1.80 L of solution.
The volume of the gas collected =500 ml then determine the mass of O 2 is collected? The vapor pressure of H 2 O at 25 degree Celsius =23.8 torr
Butyric acid (a monoprotic acid) is responsible for the foul smell of rancid butter. the pKa of butyric acid is 4.84. calculate the pH of a 0.05M sloution of sodium butyrate
If you have 24.0 g of NaCl dissolved in 306 mL, what is the molarity of the solution
To prepare 5.0 L of a 3.50 M solution of Potassium Hydroxide (KOH), how many grams of Potassium Hydroxide must be used?
What is the percentage ionization of the acid? What is the value of Ka for the acid? 2) Periodic acid, HIO4, is an important oxidizing agent and a moderately strong acid. In a 0.20 M solution
A ten L Dewar containing liquid nitrogen tips over in your car while you are transporting it. If it completely vaporizes what volume of Nitrogen gas will be produced at 1 atm and 20 degrees C
When 2.20 grams of Cr(CO)6 reacts according to the following equation at 400 °K in a closed system the temperature goes down and 5.2 kJ of hear is absorbed
Draw structural and line-bond formulas for all the structural isomers with the formula C4H9Cl. Determine the polarity of each, showing partial changes and the overall direction of the net dipole where applicable.
Gallium has two common isotopes Ga-69 and Ga-71. Suppose we wanted to use the Ga-71 isotope for some reason, and obtained a pure 6.0g sample of Ga-71.
An aqueous solution contains 4.20% NH3 (ammonia) by mass. The density of the aqueous ammonia is 0.979 g/mL. What is the molarity of NH3 in the solution?
Write the Bronsted-Lowry chemical equation describing how C2H5NH2 behaves when add to water. Indicate whether C2H5NH2 behaves as an acid or a base
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