Find out the amount of heat required to melt
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.
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The rectangle has the area of 31.5 square meters. If length is 2 meters more than twice width, determine the dimensions of rectangle.
Determine the relationship of the distance of an object in front of the plane mirror and the distance of its image ‘behind’ the mirror? Determine how much bigger is the image than the real object?
At a pressure of 1.0 atm and the temperature of 25 degrees Celsius a saturated solution was formed when 4.54*10^-2 L of argon was dissolved in the 1.0 L of water. Evaluate the Henry's law constant for argon.
Cutting a 1 foot by 1 foot square off of every corner and folding up edges will yield the open box. If desired volume is 12 cubic feet, find dimensions of original rectangular piece of cardboard?
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?
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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