I wish to prepare 500.0 mL of a 825.0 ppm w/v Fe2+ (MW=55.845 g/mol) solution. How many grams of ferrous ammonium sulfate hexahydrate (Fe(NH4)2(SO4)2⋅6H2O MW=392.14 g/mol) are needed to prepare this solution? Assume the final solution has a density of 1.00 g/mL. And!Determine the concentrations of Na2CO3, Na+, and CO32− in a solution prepared by dissolving 2.20 × 10−4 g Na2CO3 in 1.00 L of water. Express all three concentrations in molarity. Additionally, express the concentrations of the ionic species in parts per million (ppm). Note: Determine the formal concentration of CO32−. Ignore any reactions with water. Thank you!

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Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section: Chapter Questions

Problem 127QRT

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I wish to prepare 500.0 mL of a 825.0 ppm w/v Fe2+ (MW=55.845 g/mol) solution. How many grams of ferrous ammonium sulfate hexahydrate (Fe(NH4)2(SO4)2⋅6H2O MW=392.14 g/mol) are needed to prepare this solution? Assume the final solution has a density of 1.00 g/mL.

And!

Determine the concentrations of Na₂CO₃, Na⁺, and CO₃²⁻ in a solution prepared by dissolving 2.20 × 10⁻⁴ g Na₂CO₃ in 1.00 L of water. Express all three concentrations in molarity. Additionally, express the concentrations of the ionic species in parts per million (ppm). Note: Determine the formal concentration of CO₃²⁻. Ignore any reactions with water.

Thank you!

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