How many moles are in 4,55 X 10^23 molecules of CO2 (rounded)

0.7556 mol

Explanation:

each mole has 6.022 X 10²³ particles (our particles are molecules in this situation)

(4.55 X 10²³)/(6.022 X 10²³) = 4.55/6.022 = 0.7556

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

a electronegativity decreases beacuse the size of nucleus is bigger.