How many grams are in 4.5 moles NaF (show work )

^ill mark u as brainlister please

190 grams

Explanation:

Find the molar mass of NaF

Na = 23.0

F = 19.0

23 + 19 = 42

Now use this dimensional analysis to show your work

4.5 mol NaF * ( 42.0 grams of NaF / 1 mol NaF)

Moles cancel out.

4.5 x 42.0 = 189

With sig figs, it is 190.

So the final answer is 190 grams in 4.5 moles NaF

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

c. orbital shape i hope this is correct