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A certain brand of antacid has a dosage that contain 400 mg Mg(OH)2. How many mmoles of HCl can be neutralized by one dose of this antacid?
The pressure of the gas remaining in the vessel of unknown volume was 0.882 atm. All the measurements were done at the same temperature. What is the volume of the vessel?
Explain how to prepare 1L of a buffer at pH 7.4 using 1M hypochlorous acid (Ka = 3.5 x 10-8) and a 1 M NaOH solution.
How many mmoles of mercury are in the sample? B) How many mg's of mercury are in the sample? C)What is the percent mercury (w/w) in the ointment?
Important information about Hydroboration reaction, In one experiment you combine 1-hexene which is reacted with H2SO4 with water as the solvent and the compound produced is 2-hexanol
What is the Kb of C5H5N? The pH is 10.82 and the amount of C5N5N is 1.0X10^-3
How many molecules of triclosan are in a tube of toothpaste?
What mass of sucrose should be combined with 464g of water to make a solution with an osmotic pressure of 8.60atm at 280K? (Assume the density of the solution to be equal to the density of the solvent.)
Calculate that how many grams of potassium chloride remain dissolved and how many grams came out of this given solution?
What is the wavelength of an electron traveling with a velocity of 7.0 times 10 to the 3rd power?
Calculate the heat of formation, Hof, of pentane given that the Hof of H_2O(l) is -285.3 kJ mol-1 and Hof of CO_2(g) is -393.5 kJ mol-1
Calculate the mass of propylene glycol that must be added to 0.360 of water to reduce the vapor pressure by 2.88 torr at 40°C (Pressure of H2O is 55.3 torr at 40°C ).
What is its speed in cm/sec? (b) How far in meters would it travel in 2.00 days? (c) If a snail weighs 2.00 grams, how many snails would it take to make a firkin at sea level?
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