Created by StemPy LabAn aqueous solution of sodium hydroxide has mole fraction of NaOH and density . What is the molarity of NaOH in this solution? Atomic masses in : H 1.0, O 16.0, Na 23.0.
← All Quizzes
← A gaseous hydrocarbon, 20.0 mL, is mixed with 100.0 mL of oxygen, which is more than enough, and sparked. After the products are cooled to the starting temperature and pressure, when the steam has become liquid, the gas volume is 80.0 mL. Shaking with potassium hydroxide solution reduces it to 20.0 mL. What is the molecular formula of the hydrocarbon?Potassium chlorate is heated with a little manganese dioxide: 2 KClO₃ → 2 KCl + 3 O₂. The oxygen from 0.490 g of KClO₃ is collected over water at 300 K, at a total pressure of 1.00 atm. The vapour pressure of water at this temperature is 0.036 atm. Take R = 0.0821 L atm K⁻¹ mol⁻¹. What volume of moist gas is collected? Atomic masses in g mol⁻¹: O 16.0, K 39.0, Cl 35.5. →
Discussion (0)
Log in to join the discussion.
Loading…