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A solution is made by dissolving 18.3 g ammonium sulfate in sufficient water to make113.0mL of stock solution. A15.00mL sample of this stock solution is added to 57.20mL of water. Compute the concentration of ammonium ions as well as sulfate ions in the final solution.
NH4+
at 350 degrees celcius and 200 atm the % yield is 50%. Calculate how many grams of N gas are required to produce 25.000g Ammonia
when the level in the arm connected to the container is 766.0 mm in height higher than the level in the arm open to the atmosphere? Atmospheric pressure is 754.2 mm Hg and the density of mercury is 13.546 g/mL.
The original amounts for the reagents with 0.5g of starting material (4-cyclohexene...) was 5mL water, 0.2g decolorizing carbon. 1.5mL of 1M sodium borohydride, 0.5mL of 5%chloroplatinic acid, and 2mL concentrated HCl.
What is the pH of a solution made by mixing 3.30 mL of 0.0045 molar Sr(OH)2 with 8.70 mL of 0.0011 molar Sr(OH)2 solution?
If 5 moles of propane and 10 moles of oxygen are sealed in a container and burned, which reactant will be the limiting reactant, and how many moles of carbon dioxide will be produced?
A 23.5 mL volume of a 0.01140 M KMnO4 solution was used to reach the equivalence point in the titration of 0.1055 g of an unknown sample containing the oxalate ion. Determine the mass (in grams) of C2O4 2 - that would be present in a 100 g sample.
the water level in a graduated cylinder initially at 221 rises to 271 after a piece of lead is submerged. what is the
why are we given a known and unknown hydrate. what is the point of having a known sample. why is it important. do scientists give is a more 'generic' name, if so, what would a scientist call the known
Antimony has two naturally occurring isotopes, Sb-121 (mass = 120.9038 amu) and Sb-123 (mass = 122.9042 amu). Calculate the percent abundances of these isotopes of antimony
The conversion of substance A to substance B has delta E = ?35 kJ mol?1 and an activation energy, Ea, of 25 kJ mol?1. Sketch a reaction diagram, and on it clearly indicate A, B, the activated complex (C), delta E and Ea.
Define the relationships between raoult's law, boiling point elevation, osmotic pressure, freezing point depression, chemical potential, and the kinetic theory
why is the production of sodium azide and nitrogen gas in an airbag so rapid compared to the production of sodium
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