The polypropylene (repeat unit CH3CHCH2) in a plastic toy has a molar mass of 3.6 x 105 g/mol, and the length repeat unit of 0.310 pm. Calculate the radius of gyration.

What material does not melt at any temperature

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.

What atom has the largest atomic radius