Which title best fits rahma’s notes?

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

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

Count the number of each type of atom in the equation below, and then balance the equation. write in the numbers of atoms and coefficients. add a 1 if there should be no coefficient. cs2(l) + o2(g) → co2(g) + so2(g) c [ ] s [ ] o > c [ ] s [ ] o [ ] cs2(l) + [ ] o2(g) > [ ] co2(g) + [ ] so2(g)