What is the mass of a 6.761-mol sample of sodium hydroxide?
A)40.00 g
B)270.4 g
C)162.3 g
D)5.916 g
E)0.1690 g

Name: What is the mass of a 6.761-mol sample of sodium hydroxide? A)40.00 g B)270.4 g C)162.3 g D)5.916 g E)0.1690 g
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Question

Quizplus · Accepted Answer

To find the mass of the sample, we need to use the molar mass of sodium hydroxide (NaOH).

Molar mass of NaOH = 23.00 g/mol (Na) + 16.00 g/mol (O) + 1.01 g/mol (H) 
= 40.01 g/mol

Mass of 6.761 mol NaOH = 6.761 mol x 40.01 g/mol = 270.4 g

Therefore, the correct answer is B.

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