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docker41 [41]
3 years ago
11

A sample of seawater contains 78.0 grams of NaCl in 2,025 mL of solution. If the molar mass of NaCl is 58.443 g/mol, what is the

molarity of this sample?
0.659 M NaCl
0.823 M NaCl
1.84 M NaCl
2.08 M NaCl
Chemistry
2 answers:
DENIUS [597]3 years ago
4 0

Answer:

that would be 0.659 M NaCl

Olin [163]3 years ago
4 0

Answer:

0.659 M NaCl

Explanation:

Equation: Molarity = moles of solute / liters of solution

1. To find moles of solute:

78.0 g NaCl x 1 mol NaCl / 58.44 g NaCl

= 1.334 mol NaCl

2. Calculate molarity

Transfer 2,025 mL to L

1.334 / 2.025 = 0.659 M NaCl (rounded)

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