Why do the oceans play such a large part in the water cycle

In The Ocean The Water Will Become Water Vapor (The First Part Of The Water Cycle) And Become A Cloud Then It Would Rain And The Water Will Get Collected In The Ocean (The Last Part)

Oceans are the source of water for the water cycle.

Initially note that 2.37 g + 3.04 g = 5.41 g, which means that the sample was a compound of only N, H and O.

Convert the masses of N2 and H2O into number of moles by using the molar masses of each.

1) N

moles = mass of N2 / molar mass of N2 = 2.37 g / ( 14.0 g/mol) = 0.169 mol of N

2) H2O

moles = mass of H2) / molar mass of H2O = 3.04 g / (18.0 g / mol) = 0.169 mol

0.169 moles of H2O => 2 * 0.169 moles of H and 0.169 moles of O

3) Emipirical formula

N: 0.169 / 0.169 = 1

H: 2* 0.169 / 0.169 = 2

O: 0.169 / 0.169 = 1

=> NH2O

4) Molar mass of the empirical formula: 14.0 g/mol + 18 g/mol = 32 g/mol

5) Number of times that the empirical formula is contained in the molecular formula: 64 g/mol / 32 g /mol = 2

6) Molecular formula = 2 * Empirical formula = N2H4O2

N2H4O2