Which of the Statements Below Are TRUE for Expressing the Concentration

question 17

Multiple Choice

Which of the statements below are TRUE for expressing the concentration of a 54.9-ppm Fe solution in terms of molarity?
I Iron's molar mass must be known to calculate the moles iron in solution.
II Iron's density must be known to calculate the mass iron in solution.
III The solution density must be known to calculate the solution volume.
IV The type of glassware used to prepare the solution must be known.

• A)I,III,and IV
• B)I and II
• C)I and III
• D)II and III
• E)None of these is true.

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