Now write the formulas of TWO compounds we can investigate--one that has an element substituted for H, and one that has an element substitute for O. Write the formulas separate by a comma, like this: X2O, H2X *

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.