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An antacid tablet containing magnesium hydroxide as an active ingredient requires 22.6 mL of 0.597 M HCl for complete neutralization. What mass of Mg(OH)2 did the tablet contain?
A 5.50 g sample of an unknown is dissolved in 251. g of benzene. The freezing point of the solution is 1.02 C below the normal freezing point of pure benzene.
A container with a volume of 101 L contains how many atoms of argon gas at STP?
An odorous gas emitted by a hot spring was found to diffuse 2.92 times slower than helium. What is the molar mass of the emitted gas.
How many grams of silver and how many grams of chloride ions are in 1 L of solution?
An aqueous solution of CaCl2 has a vapor pressure of 83.0mmHg at 50 C . The vapor pressure of pure water at this temperature is 92.6mmHg .
Calculate the mass of urea that should be dissolved in 187 g of water at 35C to produce a solution with vapor pressure of 37.7 mmHg
Calculate the empirical formula for a chemical compound which gives the following analysis: 12.6 percent lithium, 29.2 percent sulfur, and 58.2 percent oxygen.
What is the molarity of a solution of 12.0 g of NH4Br in enough H2O to make 240 mL of solution?Answer in units of M.
Mercury-205 has how many protons, neutrons, electrons, and electrons in the 1st quantum shell and in the compound BCl3 which is the more electronegative element?
If each mole of gas occupies 55 L under the conditions of the explosion, how many liters of gas are produced? c) how many grams of N2 is produced in the detonation?
if 836.8 Joules are added to 25 grams ammonia at 37 degrees Celsius, what will the final temperature be?
Consider the equilibrium represented by the following equation: Heat + H2O(l) H2O(g) in which T=373K, P=101kPa Which of the following will favour the reverse reaction? (a) The total volume of the system is increased
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