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A rolaids tablet contains calcium carbonate, which neutralizes stomach acid. If a rolaids tablet neutralizes 42.15 mL of 0.320 M hydrochloric acid, how many milligrams of calcium carbonate are in a rolaids tablet? CaCO3(s) + 2HCI(aq) -(arrow right) CaCl2(aq) + H2O(I) + CO2 (g)
a solution is prepared by dissolving 297 g of sucrose c12h22o11 in 624 g of water. what is the vapor pressure of this
CaCO3(s)+2HCl(aq) -> CaCl2(aq) +H2O(l) +CO2(g) How many grams of calcium chloride will be produced when 27.0 g of calcium carbonate are combined with 12.0 g of hydrochloric acid. Which reactant is in excess and how many grams of this reactant will..
Given the parent compound, draw the mass spectrum fragment that is observed at m/z 91. Include any hydrogen atoms and the charge.
A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 180g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7degrees Celsius
a cup of hot steaming coffee sits on the desk at 80 degrees celsius and is composed of mostly water with some things
What is the buffer component ratio, ([CH3COO-]/[CH3COOH]) of an acetate buffer
identify organic compounds in medications. determine the structure of one active component and identify three functional groups on each molecule.
An aqueous solution contains 3.00% phenylalanine (C9H11NO2) by mass. Assume the phenylalanine is non-ionic and nonvolatile. Find the following
how much energy in joules does it take to raise 25.0g of liquid ethanol at 25.0degc to 78.0degc and then evaporate?
Describe the pH of a buffer solution consisting of 100 mL containing 0.1M CH3COOH and 0.125M CH3COO- , both before and after addition of 10 mL of 0.25M HCl. Ka = 1.8 x 10-5.
a gas is confined to a cylinder under constant atmospheric pressure. when 415 j of heat is added to the gas it expands
What is the theoretical yield (in grams) of the precipitate when 22.35 g of barium nitrate reacts in solution with 11.37 g sodium carbonate
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