You are to prepare each of the following 100-mL Test Reagents in the Laboratory with concentrations in:  5% (w/v) Sodium hydroxide Given atomic weight:  Na- 22.99  O- 15.99  C- 12.01  H- 1.01 Use this formula in solving: mol (for moles)  mol/L (for Molarity) mol/kg (for Molality)  eg/L (for Normality) FIND:  Number of moles of Sodium hydroxide: Number of moles of Solvent: Mole fraction of Solvent: Weight of solute needed to prepare the test reagent: Factor: Molarity:

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A:

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.