Chemistry Answers

What is likely structure of hydrocarbon of formula C6H12 that shows strong absorption at 2920 and 2840 cm^-1,and at 1450 cm^-1?(There is no absorption above 2920 cm^-1 and between 1450 cm^-1 and 1250 cm^-1)

Calculate the freezing point and boiling point of each aqueous solution, assuming complete dissociation of the solute.

a. 0.100 m K₂S

b. 21.5 g of CuCl₂ in 4.50 x10² g water

c. 5.5% NaNO₃ by mass (in water)

2H2(g) + O2(g) -> 2H2O(I)

Рахмет, +

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N2(g,10 atm) -> N2(g,1atm)

N2(g,10 atm) -> N2(g,1atm)

Directions: Predict whether the entropy change of the system in each of the

following is positive or negative.

What is the driving force for recrystallization??(b) What is the driving force for grain growth?

 Explain the differences in grain structure for a metal that has been cold worked and one that has been cold worked and then recrystallized.

A cylindrical specimen of cold-worked copper has a ductility (%EL) of 15%. If its cold-worked radius is 6.4 mm, what was its radius before deformation?