How many moles are in 6.04 x 10^23 atoms of Diphosphorus trioxide?

Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]

The sum of the oxidation numbers in a neutral compound is always

What is the difference between a substance "getting wet" and "being dissolved" in a liquid at the particulate level?