What is the mass percent of sodium chloride (naci) in a solution that is made by dissolving 2.35 g of naci in 7.45 g of water (h2o)? ​

• Réponse publiée par: batopusong81

1: 0.100 mole of NaCl is dissolved into 100.0 grams of pure H2O. What is the mole fraction of NaCl?

Solution: We will calculate the number of moles of water ( solvent)

100.0 g / 18.0 g mol-1 = 5.56 mol of H2O

Add that to the 0.100 mol of NaCl = 5.56 + 0.100 = 5.66 mol total

Mole fraction of NaCl = 0.100 mol / 5.66 mol = 0.018

What is the mole fraction of the H2O?

5.56 mol / 5.66 mol = 0.982

Explanation:

• Réponse publiée par: alexespinosa

0.663 i think or i'm wrong

• Réponse publiée par: cland123

24.0%

Explanation:

Given: mass NaCl = 2.35 g

mass H2O = 7.45 g

Required: %m

Equation: %m = [mass NaCl / (mass NaCl + mass H2O)] × 100

Solution: %m = [2.35 g / (2.35 g + 7.45 g)] × 100

%m = 24.0%

• Réponse publiée par: kuanjunjunkuan

solid

Explanation:

because not material

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What is the mass percent of sodium chloride (naci) in a solution that is made by dissolving 2.35 g o...