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17 May, 02:12

What mass of sodium sulfate is needed to make 2.5 L of 2.0 M solution?

A 120 g

B 150 g

C 180 g

D 710 9

E 750 g

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Answers (1)
  1. 17 May, 02:32
    0
    D) 710 g

    Step by Step:

    Multiply 2.5 L by 2.0 M to solve for moles

    2 mol/L • 2.5 L = 5 mol

    Find formula weight of sodium sulfate

    Na2SO4-142.04 g/mol

    Na - 2 (22.99) = 45.98

    S-32.06

    O-4 (16) = 64

    Multiply miles by formula weight

    5 mole • 142.04 g/mol=710.2 g
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