Provide solutions for the following problem. Express your final answer as indicated otherwise show your answer in two decimal places. Show the given and unknown 1. How many Kg (in scientific notation with 3 significant figures) of water is needed to produce a 7.38% by weight solution containing 18.65g KCI? K = 39; Cl = 35 2. Family rubbing alcohol comes in 50% and 80% solution of isopropyl alcohol. How many ppm of isopropyl alcohol are there in the 80% solution (in scientific notation with 3 significant figures)? How many mL of isopropyl alcohol are there in 670m of the 50% solution ? 3. 58.39 grams of Antimonic nitride (Sb3Ns) was dissolved in water to produce 5.21L solution. What must be its normal and molar concentrations? Sb= 122: N = 14

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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.