How much energy would it take to heat a section of the copper tubing that weighs about 630.0 g , from 13.12 ∘c to 27.91 ∘c ? copper has a specific heat of 0.3850 (j/g)⋅∘c.
express your answer to four significant figures.

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.