The molar mass of NAoH

Hey there!

Molar mass of NaOH:

Add the molar masses of each element multiplied by the amount of that element we have.

Na: 1 x 22.99

O: 1 x 16

H: 1 x 1.008

    30.07

The molar mass of NaOH is 30.07 grams.

Hope this helps!

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.