Calculate the number of molecules present in 1 dm^3 of hydrogen at STP.

Question

Please log in or register to answer this question.

faiz · Answer 1 · 2018-05-29T23:24:02+0000

1 mole of H₂ at STP occupy 22.4 dm³

1 mole of H₂ = 22.4 dm³ =6.022 x 10²³ molecules

22.4 dm³ of hydrogen contain molecules = 6.022 x 10²³

1 dm³ of hydrogen contain molecules = 6.022X10²³ /22.4 = 2.69 x 10²² molecules