Question

How many hydrogen atoms are in 2.5 moles of water

Answer 1

1.505×10^24

Step-by-step explanation:

mole= number of Particles÷Avogadro's number

let X represent number of atoms

2.5= X ÷ 6.02×10^23 (Cross multiply)

2.5×6.02×10^23= X

X= 1.505×10^24

Answer 2

5 moles

Step-by-step explanation:

one mole of water contains 6.023 × 10^23 molecules of water,but each molecule contains two hydrogen atoms .

so one mole of water contains 1.2046 ×10^24 atoms .

Therefore 2mole H2O will have 2.4088×10^24 hydrogen atoms .

=5moles