Hi! Are Delta Hsolution and Delta Hreaction the same value in dissolution? Please help! I know qrxn and qsolution are opposite(signs). I'm confused as to if DeltaHsolution and DeltaHreaction are different...

Hi! Are Delta Hsolution and Delta Hreaction the same value in dissolution? Please help! I know qrxn and qsolution are opposite(signs). I'm confused as to if DeltaHsolution and DeltaHreaction are different...

calculate enthalpy change for reaction 2c+3h2->c2h6.given that sublimation energy of carbon is 716.7 KJ/mol and the bond energy of H-H,C-H,C-C bonds are 433,413,348kJ/mol

I need this answer for my test tomorrow/

A 30g lead bullet at 30°C was fired at a speed of 240m/s into a large block of ice at 0°C, in which it embeds itself...

A civil engineer is to lay two long steel arches are 518m each, and the environment has night and day temperature of -20°C and 30°C. What spacing would the engineer leave between the arches....

If he covered his pipe with an insulating material of thermal conductivity 83.7.J/ms°C , how much energy is lost every second when the steam is at...

why the entropy of a universe can not be negative?

An ideal gas (Cp/Cv = γ) is taken through a process in which the pressure and the volume vary as P = KVa. Find the value of a for which the specific heat capacity in the process is zero.

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 40 cm^3. If the combustion of this mixuture released 950 J of energy, to what volume will the gases...

A 4m3/hr pump delivers water to a pressure tank. At the start, the gauge reads 138KPa until it reads 276KPa and then the pump was shut off. The volume of the tank is 180liters. At 276KPa the...

Hi there, I I have a question about Physics/ chemistry. If I have a bag of iron oxide(lll) and powdered aluminium in the ratio of 3:1 totalling 72g, with 54g being Fe2O3 and 18g of 2Al, what...

Estimate the isothermal compressibility of a dry gas for use at 4,200 psia using the following data taken at 120 oF. Pressure Z factor 6000 1.1252 5600 1.0736 5200 1...

A) Estimate the isothermal compressibility of a dry gas for use at 4,200 psia using the following data taken at 120 oF. B) Some of this gas is placed in a piston cylinder and pressurized...

What's that for the other properties that helps us to find the macroscopic properties?

Hey, I'm at my wit's end when it comes to thermodynamics. Apparently, I was given this little assignment from my lecturer to solve it at home. I need help in solving this, really...

A student takes a Styrofoam cooler in fills it with 2.00 L of water. He then adds a small amount of sodium to it and it reacts according to the equation below. The initial temperature of the water...

A student takes a Styrofoam cooler in fills it with 2.00 L of water. He then adds a small amount of sodium to it and it reacts according to the equation below. The initial temperature of the...

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...

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...

3. The enthalpy change for combustion of the methane is –56 kJ/g. Calculate, how much heat is released at combustion of 0.5 kg of the methane at constant pressure. (2 points) 4. The combustion...