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An unknown solid compound containing Pb2+ ion was mixed with 15 mL of 2.0 M HNO3. The mixture bubbled profusely. After complete reaction, it was found that 0.020 moles of CO2 were produced and the original solid was completely consumed.
a) What is the chemical formula of the unknown solid?
b) Write a balanced net ionic equation for this reaction.
c) Calculate the mass of the original unknown solid.
Trichloroacetic acid (CCl3CO2H) is a corrosive acid that is used to precipitate proteins. The pH of a 0.050 M solution of trichloroacetic acid is the same as the pH
How many kilograms of sodium carbonate must be added to neutralize 2.01×103 kg of sulfuric acid solution?
If 37.3 g of CO2 is produced in the reaction of C2H2 with O2 to form CO2 and H2O, how many grams of H2O are produced in this reaction.
How many grams of water are required to dissolve 24g od KNO3 at 100 degrees celsius?
A helium-filled balloon has a volume of 2.75 L at 17 C. The volume of the balloon decreases to 2.36 L after it is placed outside on a cold day. What is the outside temperature in K?
calculate the molar mass of naphthalene, the organic compound in "mothballs," if a solution prepared by dissolving 5.00g of naphthalene in exactly 100g of benzene has a freezing point 2.00 degrees celcius below that of pure benzene.
Estrone is a female sex hormone that is known to contain 80.0% carbon, 8.2% hydrogen, and the remainder oxygen. If 793mL of estrone is found to have a mass of 4.97g at 0.90atm and 200oC, find the molecular formula for estrone.
Calculate the pH of a 0.50 M aqueous solution of NH3. The Kb for NH3 is 1.8 x 10-5.
How much heat (in ) is required to warm 12.0 of ice, initially at -12.0, to steam at 114.0? The heat capacity of ice is 2.09 and that of steam is 2.01 .
if a 50.0 liter container holds 45 moles of a gas at a temperature of 200 C what is the pressure inside the container
Vinegar is made by adding 33 grams of acetic acid to 625 grams of water. What is the percent by mass of acetic acid in this solution vinegar?
Consider the titration of a 25.0 mL sample of .125M RbOH with .105M HCl. Find the initial pH.
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