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How to determine the mass of NaCl dissolved in NaOH solution when I know the mass of NaOH? To determine tthe NaCl content in commercial NaOH , 2 g of the latter was dissolved in water and excess amount of of AgNO3 solution was added to this solution .The precipitate formed was washed and dried .Its mass was 0.287g.Find the mass of NaCl in the initial sample.
Tungsten trioxide (WO3) has a rich yellow color and is often used as a pigment in ceramics and paints. In order to test a ceramic vase for its WO3 content
A sample of nitrogen has a volume of 630 mL at a temperature of 49 degC. Assuming that the pressure is constant, what will be the volume when the temperature is 348.6 degC.
The pH of the solution at the equivalence point, The pH of the solution after 40.0 mL of HCl are added.
Adrenaline is the hormone that triggers the release of extra glucose molecules in times of stress or emergency. A solution of 0.64 g of adrenaline in 36.0 g of CCl4 elevates the boiling point by 0.49°C. What is the molar mass of adrenaline?
What is the density (in grams per liter) of a gas mixture that contains 26.0 % F_2 and 74.0 % He by volume at 743 mm Hg and 28.5 C?
A gas mixture contains 1.30g N2 and 0.95g O2 in a 1.57-L container at 22 degrees Celsius. Calculate the mole fraction of N2.
A solution is prepared by dissolving 270 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
Determine how many grams of Oxygen(O2) would be used when 10.82 Litres Nitric oxide (NO(g) is formed at the temperature of 19.82 degree Celsius and pressure of 1.092 atm?
Which of the following statements about natural radioactive emissions is incorrect?
Determine the empirical formula and the molecular formula of the organic compound. empirical and molecular formula
A 2.78 L sample of hydrogen chloride (HCl) gas at 2.61 atm and 28°C is completely dissolved in 651 mL of water to form hydrochloric acid solution. Calculate the molarity of the acid solution. Assume no change in volume.
Chemistry Concentrations, In each of the following pairs, indicate which has the higher concentration of Cl- ion
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