Why can iron be broken down into atoms, but water can only be broken down to molecules?

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1

If 4.8 moles of x and 3.4 moles of y react according to the reaction below, how many moles of the excess reactant will be left over at the end of the reaction? 3x + 2y “yields”/ x3y2. a. 1.7 mol y left over b. 1.6 mol x left over c. 0.2 mol y left over d. 0.1 mol x left over

Atriple covalent bond involves two atoms sharing three pairs of electrons. true false