Using heat formations , calculate the heat of vaporization for methyl alcohol, CH3OH, at 25 Celsius (answer:38 kj/mol) How many kJ's are required to caporize 28.6 g CH3OH at standard conditions...

Using heat formations , calculate the heat of vaporization for methyl alcohol, CH3OH, at 25 Celsius (answer:38 kj/mol) How many kJ's are required to caporize 28.6 g CH3OH at standard conditions...

A gas expands from 3 dm3 to 5 dm3 against a constant external pressure of 3atm. The work done during expansion is used to heat 10mol of water at 290 K. Calculate the final temperature of water...

The options are (a) temperature (b) work (c) pressure (d) volume

A weightlifter holds a 150 kg weight 2 m from the floor. Calculate the speed which the weight hits the floor when dropped. You may assume that no energy leaves the system, and that the gravitational...

In P-V graph of an ideal gas, there is a straight line with negative slope. How can we calculate the maximum temperature from the graph? Note:The graph is not a rectangular hyperbola but a...

When 25.0 mL of 1.0 M H2SO4 is added to 50.0mL of 1.0M of NaOH at 25.0 degrees C in a calorimeter, the temperature of the aqueous solution increases to 33.9 degrees C. Assuming that the specific heat...

If a person burns energy at the rate of 150 Watts, how much cool water (at 50o) is needed each hour to keep the person cool by evaporation (assume no heat is lost by conduction or radiation ? The...

I've spent all day on the following questions and can't seem to get them right. If anyone would be willing to provide a break down with the answer that would be greatly appreciated. I just want to...

How much more heat is needed to boil 5.0 kg of water than is needed to melt it? The latent heat of vaporization for water is 2260 kJ/kg, and the latent heat of fusion is 333 kJ/kg.

a. Calculate the amount of heat needed to warm 24.6 kg of water from a room temperature of 20.0°C to 60.0°C for use in a dishwasher. b. If the water heater has an efficiency of 61%, how much...

If 0.20 kg of iron at 100°C is added to 1.00 kg of water at 20.0°C, what is the final temperature of the system? Please explain

What is the change in internal energy, how much work is done by the gas, and how much heat flowed into or out of the gas.

if a water/ice mixture is 0 degrees can the glass container be 0 degrees as well

A hollow spherical iron container whose outer diameter is 95 cm and thickness is 4 mm is filled with iced water at 0ºC. If the outer surface temperature is 1ºC, determine the approximate rate of heat...

if you were to fix temperature and pressure , which one will you choose and what is the reason for your choice?

i just wanna know the effect of critical pressure on the properties of refrigerant

Two containers contain the same gas at different temps and pressures as indicated below Large Container: temp:200K Pressure:2X10^5 ...

If a 0.06247 kg ice cube initially at 0.00 C is allowed to melt in a Styrofoam cup holding 0.497 kg of water at 10.0 C , what is the total entropy change for this process?

If a 0.06247 kg ice cube initially at 0.00 C is allowed to melt in a Styrofoam cup holding 0.497 kg of water at 10.0 C , what is the total entropy change for this process?

I am not sure how to calculate ?G°rxn if I am not given all of the values for ?G°f. Can someone explain? I thought you The question I am trying to answer -- Calculate...

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