An ethylene glycol solution contains 19.3g of ethylene glycol (c2h6o2) in 82.4ml of water.
(a) compute the freezing point of the solution. (assume a density of 1.00 g/ml for water.)
(b)compute the boiling point of the solution. (assume a density of 1.00 g/ml for water.)
express your answer using five significant figures.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms