Look at the model of matter below. Choose the best answer that addresses the numbers asked for. * 2, 4
4, 2
1, 3
1, 2
These aren't atoms 'cuz you can't see atoms.

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

Calculate the number of molecules present in 0.750 mol of mgo.

Stage in which a typical star has completely stopped fusion