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Are the values of Kf and Kb dependent on the identify of the solvent, the solute, or both? Explain
The process of decomposition of an electrolyte by passing electric current through its solution is called as
12.755 g of a metal initially at 99.0 c are placed into 75.0g of water initially at 23 c the final temperature of the water is 24.5 c calculate the specific heat of the metal the specific heat of water is 4.184 J/g c
Suppose that you are travelling in the Space Shuttle Endeavor on a journey to Mars. The atmosphere (of the vehicle) consists of 20% oxygen and 80% helium by volume. It was noticed before take off from the Kennedy Space Center that there is a small leakage which if unchecked, would lead to a continual loss of gas at a rate of 0.05 atm/day through effusion. If the temperature in the space shuttle is maintained at 22°C and the volume of the vehicle is 15,000 liters. Calculate the amounts of helium and oxygen in grams that must be stored on a 5-day journey to allow for the leakage.
A vessel of volume 5 liters was filled with 2 moles of hydrogen gas (a), then a further
1 mole of chlorine gas (b), and then the mixture was sparked leading to the formation of 1 mole of HCI (g) (c). What are the partial pressure of the components
and the total pressure of the system at the final stage. The temperature being 25°C throughout.
How many grams of solute is present in 0.4 moles Magnesium hydroxide, Mg(OH)₂ in 550 g water, H₂O? The molar mass of Mg(OH), is 58 g/mol.
.A solution prepared by adding 10g of an unknown non-volatile, non-electrolyte solute to 150 g of water. The Boiling point of the solution is elevated by 0.433 0C above the normal boiling point of the solvent. What is the molar mass of the unknown substance?
Explain the process of steam distillation
A 74.8 g sample of a metal at 143.2 °C is added to an insulated vessel containing
208g of water at 24.8 °C. The final temperature of the mixture is 31.1 °C. What is
the specific heat of the metal in J/g-°C?
How many mL of the titrant Sr(OH)2 is needed to titrate 4.31 mL of 0.75 M HClO4, if the molarity of the titrant is 0.65 M?
