Estimate the 4th ionization energy of beryllium (Be). Express your answer in Joules (J/atom).

two identical charges each of 15g mass and negligible volume are both suspended from the same point by a non conduction weightless strings 1500mm in length. Find the magnitude of each charge is the angle between the strings is 5.

The answer to this question according to the back of the book is 0.11x10^-6C.

what is the relationship between volume and the amount of energy transferred as heat

Need to go from grade D to B ...any one that can help?