If the molality of a nabr(aq) solution is 2.50 m, what is the weight percent of nabr? the molar mass of nabr is 1029 g/mol 20.5% 25.0% 25.7% 34.6% 65.4% ent navigator j k l

The weight percent of NaBr is 25,7%

Explanation:

Molality is a way to express the concentration of a chemical in terms of moles of substances per kg of solution. Weight percent is other way to express concentration in terms of mass of substance per mass of solution per 100

Thus, to obtain weight percent you must convert moles of NaBr to grams with molar mass and these grams to kilograms, thus:

2,50 mol / kg solution × (102,9 g / 1mol) × (1 kg / 1000 g) =

× 100 = 25,7 % (w/w)

I hope it helps!

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

i have no clue hope you find the answer