Chemistry, 03.08.2019 18:20 jdkrisdaimcc11

What is the molarity of a 250.0 milliliter aqueous solution of sodium hydroxide thay contains 15.5 grams of solute. a) 6.2 m b) 0.00155 m c) 0.062 m d) 1.55 m e) 62 m

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Hey there:

Molar mass NaOH = 39.997 g/mol

Number of moles:

n = m / mm

n = 15.5 / 39.997

n = 0.387 moles

Volume in liters:

250.0 mL / 1000 => 0.25 L

Therefore:

M = n / V

M = 0.387 / 0.25

= 1.55 M

Answer D

hope this helps!

Answer from: Quest

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.

Answer from: Quest

Answer is: the equilibrium shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -

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What is the molarity of a 250.0 milliliter aqueous solution of sodium hydroxide thay contains 15.5 g...

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