Why is water and effective solvent for many different types of compounds? a. it contains hydrogen bonds b. it contains polar covalent bonds. c. it has a high specific heat d. it expands when freezing

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank