Compute the amount of heat required to melt

Reference no: EM13214561

White phosphorus is a molecular solid made of molecules of P4. A 4.30 g sample of white phosphorus starts at 21oC. Calculate the amount of heat (in J) required to melt the sample. Use the following data: Tp = 44oC; C = 94 JoC-1 mol-1; ?Hfusion = 2.5 kJ/mol.

Reference no: EM13214561

Questions Cloud

Between the arrival of p-waves and the arrival of s-waves : If the time difference between the arrival of p-waves and the arrival of s-waves is 60 appoximately how far are you from the epicenter of the earthquake?

Explain porter’s five forces model : IFSM 300 : Explain Porter’s Five Forces Model and how Bill can use it to analyze his current business and his expansion. Be sure to address each of the 5 forces and explain to Bill what they mean for his business.

Explain the heat of fusion of water : A quantity of ice at 0.0 degrees C was added to 33.6 of water at 21.0 degree C to give water at 0.0 degrees C. How much ice was added?

Compute the molar mass of the element : Calculate the molar mass (g/mol) of the element to three significant figures.

Compute the amount of heat required to melt : Calculate the amount of heat (in J) required to melt the sample. Use the following data: Tp = 44oC; C = 94 JoC-1 mol-1; ?Hfusion = 2.5 kJ/mol.

Explain the molar concentration of methanol in the mixture : What is the molar concentration of methanol in the mixture? Give answer in M, 2 significant digits, do not write down the units.

State octane ratings are assigned to gasoline mixtures : Octane ratings are assigned to gasoline mixtures based on their ability to prevent knocking relative to isooctane. Estimate the energy released during the combustion of 1.00 mol of pure isooctane.

Explain what mass of this substance must evaporate to freeze : The heat of vaporization of CCl2F2 is 289 J/g. What mass of this substance must evaporate to freeze 165 g of water initially at 15°C? (The heat of fusion of water is 334 J/g; the specific heat of water is 4.18 J/g-K.)

Explain how many grams of water can be cooled : For many years drinking water has been cooled in hot climates by evaporating it from the surfaces of canvas bags or porous clay pots. How many grams of water can be cooled from 40.°C to 19°C

User Account

All Pages