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If electricity of sufficient voltage is passed into a solution of potassium iodide in water, a reaction takes place in which elemental hydrogen gas and elemental iodine are produced, leaving a solution of potassium hydroxide. Write the unbalanced equation for this process.
When 10.0 g of NH3 reacts, the actual yield of N2 is 8.50 g. What is the percent yield?
A gas mixture is made by combining 7.2g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 92.04L. What is the molar mass of the unknown gas in g/mol, and identify the unknown gas
Using a stock solution of 95.4ppm MgCO3, you are directed by your instructor to make calibration standards of 1.0, 7.5, and12.0 ppm. If you use 100mL volumetric flasks to make the solutions, what volume of stock solution will you require for each ..
Compute the unsaturation number (aka index of hydrogen deficiency) associated with C4H3NO2S. Interpret your results. If there are no triple bonds in this compound, can you suggest a reasonable structure for the compound
A car travels at 51.0 miles per hour and gets 12.0 kilometers per liter of gasoline. How many gallons of gasoline are needed for a 5.00 hour trip
How many moles of HCl need to be added to 150 mL of 0.50 M NaZ to have a solution with a pH of 6.50? (Ka of HZ is 2.3e-5). Assume negligible volume of the HCl.
a flask contains a mixture of neg and arg. there are 0.250 mol of neg which exerts a pressure of 205 mmhg. if the arg
A sparingly soluble salt gets precipitated only when the product of concentration of its ions in the solution (Qsp) becomes greater than its solubility product. If the solubility of BaSO4 in water is 8 × 10-4 mol dm-3, calculate its solubility in ..
50.00mL of a hydrochloric acid sample requires 33.87mL of a 0.1292 M barium hydroxide solution to reach the end point. What is the molarity of the hydrochloric acid
how much tris (MW 121 g/mol) do you need to make 100 mL of a 20 mM buffer? 2) how much NaCl do you need to make 100 mL of a 5mM solution?
0.65 of hydrogen chloride () is dissolved in water to make 7.5 of solution. What is the of the resulting hydrochloric acid solution
2 drops of methyl orange indicator are added to a 25.0 mL sample of strontium hydroxide. A 0.073 M HCl solution (titrant) is dispensed into the solution (analyte). The solution turns from yellow to red after the addition of 29.5 mL.
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