Find the protons, electrons and neutrons for atom with a mass of 3 an an atomic number of 1. i think the atom is hydrogen, but i don't have a clue about the mass. !

Stage in which a typical star has completely stopped fusion

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1:

Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.