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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)
2-Methylpentane and 4-methyl-2-pentanone are constitutional isomers with the molecular formula C6H12O.each shows a molecular ion peak in its mass spectrum at m/z 100.
A gas is confined to a cylinder under constant atmospheric pressure. When 419 J of heat is added to the gas, it expands and does 103 J of work on the surroundings. What is the value of delta H for this process. And what is the value of delta E for..
Write a balanced reaction for the acid-base reaction of diethylbenzyl phosphonate with sodium hydroxide. Which hydrogens are the most acidic?
A sample of neon has a volume of 780 mL when it is at a pressure of 751 mmHg. What will be the volume when the pressure is increased to 1389 mmHg?
Geologist can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life
Calculate the vapor pressure of water above a solution prepared by dissolving 36.0 g of glycerin (C3H8O3) in 120 g of water at 343 K. (The vapor pressure of water at 343 K is 233.7 torr.)
a corrosion technologist pipetted a 100 ml hard water sample and titrated it with 37.64 ml of 0.01 M EDTA solution for a total endpoint, and 29.32 ml of 0.01 M EDTA solution for a calcium endpoint.
Given the three isomeric alcohols, 2,2-dimethyl-1-butanol, 2-methyl-2-pentanol, and 2-methyl-3-pentanol, which are chiral
How much heat energy is evolved or absorbed 8kg of Ca(OH)2 reacts with a stoichiometric amount of CO2 Delta(H) = -69.8 kJ/mol
what is the ph of a 0.15m solution of hcooh formic acid if the ka of formic acid hcooh is 1.8x10-4 at 25 degrees
Calculate the expected change in temperature for 1.7 g of NH NO dissolved in 50.0 2 cal mL of H O. Assume that the calorimeter absorbs no heat. (ie. C =0)(Remember to use dimensional analysis
Determine the empirical formula of each of the following compounds. (Type your answer using the format CH4 for CH4 and list the elements in the same order as they are mentioned in the problem.)
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