Describe the freezing point of a solution
Calculate the freezing point of a solution that which contains 78.8 g of naphthalene dissolved in the 722 mL of benzene where d = 0.877 g/mL. Pure benzene has a melting point of 5.50°C and a freezing point depression constant of 4.90°C/m.
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Find out the amount of heat required to melt 2.00 Kg of iron at the melting point (1,809K), when the H fusion = 13.80 kJ/mol.
Determine the numbers of moles of ammonium ions are in8.746 g of ammonium carbonate? At 60.0 C determine the amount of heat that must be absorbed by 10.0 g of ice at -20.0 C to convert it to liquid water when the specific heat of ice= 2
Determine the cost of operating two 200 Watt flood-lights for a time of 24 hours, supposing the cost of electrical energy is $.08 per kilowatt-hour. The automobile engine is rated at 150 horse-power. Change this power to kilowatts.
If the person throws the water balloon downward with the speed of 5 feet per second, height of water balloon is given by equation h=-16t(squared)-5t 100, where t is in seconds. Find when water balloon will hit ground?
Compute the insurance of a solenoid having 300 turns if the length of the solenoid is 25cm and it cross-sectional area is 4cm squared.
What volume of the stock solution should be diluted to 25.0 mL to acquire the desired solution? From a stock solution of 0.100 M LiNO3 (aq), 25.0 mL of 0.0100 M LiNO3 (aq) is to be prepared.
Calculate the concentration in molarity if a solution is made by combining the 0.224 g glucose (C6H12O6) with enough water to make a final volume of the 250.0 mL.
A person on the scale rides in an elevator. When the mass of the person is 60.0 kg and the elevator accelerates downward with the acceleration of 4.90 m/s^2, determine the reading on the scale?
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