How many moles are in 2.98 E 28 molecules of water?

The number of moles : n = 4.95 x 10 ²⁴

Given

2.98E28 molecules of water

Required

The number of moles

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

n = N : No

n = 2.98 x 10²⁸ : 6.02.10²³

n = 4.95 x 10 ²⁴

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