When you are titrating raw green peppers and whatever you choose to compare them to, how will you know if the differences you see are due to actual differences in vitamin c content or to your ability to titrate accurately and precisely?

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

How is the atomic number of a nucleus changed by alpha decay

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?