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Calculate the volume of 6.15% (mass solute/volume solution) sodium hypochlorite ("bleach") that will be required to make 250 mL of 0.500 M sodium hypochlorite.
A sample of nitrogen gas is contained in a piston with a freely moving cylinder. At 0 C, the volume of the gas is 307 mL. To what temperature must the gas be heated
The solubility of silver phosphate in pure water and Na3PO4, Silver Phosphate, Ag3PO4, is an ionic compound with a solubility product constant Ksp of 206 x 10 ^ - 18.
Ethylene glycol, C2H6O2 (MW=62.1mol) has a density of 40.0 mass percentage and a solution of ethylene glycol in water is 1.0514 g/mL at 20 EC. Calculate the molality of the solution
A solution is prepared by dissolving 179 g sucrose (C12H22O11) in enough water to produce 1.15 L solution. What is the molarity of this solution?
Determine the volume of the methane at STP if bacterial culture isolated from sewage produced 35.5 mL of methane, CH 4 , at the temperature of 31 degree Celsius and at pressure of 753 mmHg.
A mixture of MgCO3 and MgCO3·3H2O has a mass of 3.057 g. After heating to drive off all the water the mass is 2.790 g. What is the mass percent of MgCO3·3H2O in the mixture.
how much heat energy in calories is needed to raise the temperture 10.0g of water 6.0C
Consider 20.0 moles of CO2 in a 1.0 liter container at 300.0 K. What is the pressure predicted by the van der Waals equation.
0.60 g of hydrogen chloride (HCl) is dissolved in water to make7 L of solution. What is the pH of the resulting hydrochloric acid solution.
Consider the two equilibria and their equilibrium constants: (1) 2NO2(g) ↔ N2O4(g) KC1 (2) ½N2O4(g) ↔ NO2(g) KC2
Calculate how many atoms of potassium A three mole sample of K2S would have and Calculate the current for diffusion-controlled electrolysis
An unknown compound X, is thought to have a carboxyl group with a pka of 2.0 and another ionizable group with a pka between 5 and 8. When 75 ml of 0.1 M NaOH was added to 100 ml of a 0.1 m solution of X at pH 2.0, the pH increased to 6.72.
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