How many mEq of Na^+are in 120 mL of an 8 % solution of sodium cyclamate ( molecular weight =20

step 1 In this problem, normality is equal to number of equivalents of solute by volume of solution by

How many mEq of Na^+are in 120 mL of an 8 % solution of...

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Key Concepts

Percent Solution Concentration

This concept involves understanding that an 8% solution means there are 8 grams of solute present in 100 mL of solution. It allows one to determine the amount of solute (in grams) in any given volume by scaling this ratio, which is fundamental for preparing or analyzing solutions in chemistry.

Molecular Weight in Stoichiometric Calculations

Molecular weight is the mass of one mole of a substance, expressed in grams per mole. In stoichiometric calculations, it is used to convert a given mass of a compound into moles, the basic counting unit in chemistry, thereby linking the mass-based and mole-based descriptions of substances.

Milliequivalents (mEq) and Valence

The concept of milliequivalents quantifies the reactive capacity of ions in a solution based on the charge or valence of the ion. It involves converting moles to equivalents—where 1 equivalent corresponds to the amount of substance that supplies one mole of charge—and scaling such that milliequivalents equal 1000 times the equivalents. This is essential for balancing reactions and computing ion concentrations.

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