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Calculate the change internal energy (ΔE) for a system that is giving off 65.0 kJ of heat and is performing 855 J of work on the surroundings.   (5pts)

A sample of neon occupies 4.50 liters at 30.0°C and 2.50 atmospheres. What pressure does the sample exert at 50.0°C if the sample is compressed to 3.25 L?   (10pts)

If a chemical reaction has ΔH = -5.4 kJ and ΔS = +10.5 J/K. What is ΔG for the reaction at 298 K (to one decimal place)? Use the equation ΔG= ΔH – TΔS and remember to use the correct units throughout.

Express the confidence interval using the indicated format.Express the confidence interval 0.036 < p < 0.476 in the form of  ± E.

Use the confidence level and sample data to find a confidence interval for estimating the population μ. Round your answer to the same number of decimal places as the sample mean.Test scores: n = 96,  = 88.9, σ = 8.2; 99% confidence

How many 8th notes are required to fill a measure in time?

Protists are prokaryotes.

Conversion of molecules with C=C double bonds can be converted into molecules with a single C-C bond by addition of (reaction with) chlorine gas, Cl2(g). The balanced equation is shown below for reaction of ethylene with chlorine gas to make dichloroethane. Using the bond dissociation energy information provided in the equation, what is the enthalpy of this reaction as written, ΔHr, in kJ/mol?

A sample of oxygen occupies 47.2 liters under a pressure of 1240. torr at 25°C. What volume would it occupy at 25°C if the pressure were decreased to 730. torr?  (10pts)

Explain why you picked the answer above.