Calculate the number of molecules in 9.00 moles h2s.

5.42 x 10²⁴

Explanation:

There is a number called Avogrado's constant, and this constant is:

6.022 x 10²³

The reason that this number is so important in chemistry calculations, is that it is the exact number of atoms in a mole of that substance.

Calculations:

No. of molecules = (Avogrado's constant) x n  (where n is the moles)

No. of molecules = (6.022 x 10²³) x (9 moles)

No. of molecules = 5.42 x 10²⁴

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the practice of taking someone else's work or ideas and passing them off as one's own.

explanation:

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >