Why did earths early atmosphere lose its hydrogen and helium gases

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

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)

The fact that the total amount of energy in a system remains constant is a(n)