Answered

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You are trying to determine the
mass of sodium chloride required to
create a 0.875 m solution in 534 g of
water. How many moles of NaCl are
required?

You Are Trying To Determine The Mass Of Sodium Chloride Required To Create A 0875 M Solution In 534 G Of Water How Many Moles Of NaCl Are Required class=

Sagot :

shivaniguleri321

Answer:

Answer:

Mass = 27.291 g

Explanation:

Given data:

Mass of sodium chloride = ?

Mass of water = 534 g

Molality = 0.875 m

Solution:

Molality:

It is the number of moles of solute into kilogram of solvent.

Formula:

Molality = number of moles of solute / kilogram solvent

Mathematical expression:

m = n/kg

Now we will convert the g into kg.

Mass of water = 534 g× 1kg/1000 g = 0.534 kg

Now we will put the values in formula.

0.875 m = n / 0.534 kg

n = 0.467 mol

Now we will calculate the mass of sodium chloride:

Mass = number of moles × molar mass

Mass = 0.467 mol × 58.44 g/mol

Mass = 27.291 g

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