Respuesta :

fatouramjaun
use Avogadro's number which is numerically equal to ...

( 6.02 multiply by 10 to the power of negative 23) 


Avocado's number is the number of particle(molecules, ions, atoms)  present in one mole of substance.

number of molecule in 0.809 mole of h20 = ....

one mole of h20 contains (6.02* 10^-23)

0.809 mole contains....(6.02* 10^-23) (0.809)
which is equal to [4.951* 10 ^-23]

if I made no mistake in calculation...it must be correct
JavierCollante
to convert moles to molecules, or molecules to moles, we use Avogadro's number.

1 mol= 6.02 x 10²³ molecules

[tex]0.809 moles \frac{6.02x 10^{23}molecules }{1 mol} = 4.87x 10^{23} molecules[/tex]

Otras preguntas