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Calculate the molality of a 6.55 kg sample of a solution of the solute CH²Cl²dissolve in the solvent acetone C³H0O if the sample contains 876 g of methylene chloride
At 22∘C,an excess amount of a generic metal hydroxide, M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.16. What is the 𝐾sp of the salt at 22∘C?
What mass of solute ___ mg is dissolved in 1.106kg of a 5.12% (m/m) solution?
Calculate the entropy change, Svap, when 1 mole water I liquid state is converted to 1 mole steam at 1 atm pressure.
Given:
qrev = heat of vaporization,
Hvap = 75 kJ/mol
T = (100 C or 373 K)
1. Calculate the entropy change, Svap, when 1 mole water I liquid state is converted to 1 mole steam at 1 atm pressure.
Nitrogen gas is produced in a reaction. If the temperature of the gas is 289.5 K, the pressure at 11.7 MPa, and the volume is 12.8 L, determine the mass of the nitrogen gas, in kilogram.
Helium gas is contained in a tank with a pressure of 11.0 MPa. If the temperature inside the tank is 22.0 ºC and the volume of the tank is 15.8 L, determine the mass, in grams, of the helium in the tank.
A 11.38 L balloon contains 0.63 mol of air at 185.50 kPa pressure. What is the temperature of the air in the balloon?
Chlorine, a poisonous yellow gas can be produced by mixing vinegar and bleach for a cleaning solution. The volume occupied by 13.4 g of chlorine gas at -41.8 ºC and 117.38 kPa is?
Ammonia is produced from its elements in a formation reaction. If 8.93 x 1024 molecules of ammonia are produced, how many moles of hydrogen were used?
