Question

40 grams of sodium hydroxide is dissolved in 90 grams of water.then mole fraction of sodium hydroxide is ​

Answer 1

SoluTion :-

40 grams of sodium hydroxide is dissolved in 90 grams of water.

$\sf {Mole\ Fraction\ = \frac{The\ moles\ of\ one\ component }{The\ total\ moles\ in\ the\ solution\ or\ mixture} }$

$\sf {Mole\ Fraction = \frac{40}{40 + 90} = \frac{40}{130} = 0.30769 }$

$\rule {130}{2}\ Be\ Brainly\ \star$

Answer 2

Answer:mole fraction = ___40____

40 + 90

=o.30769

Explanation: