When chemists work with solid materials, we simply weigh out amounts of solid reagents and calculate mole amounts when thinking about stoichiometry. However, when we dissolve a solid (also known as a solute) in a solvent to form a solution, the solute becomes evenly distributed throughout the solution and we need to know how many moles of solute are present in a particular volume of solution. 1) A solution is created by dissolving 13.0 grams of ammonium chloride in enough water to make 295 mL of solution. How many moles of ammonium chloride are present in the resulting solution? _______ moles of NH4Cl   2) When thinking about the amount of solute present in a solution, chemists report the concentration or molarity of the solution. Molarity is calculated as moles of solute per liter of solution. What is the molarity of the solution described above?  _________ M  3) To carry out a particular reaction, you determine that you need 0.0500 moles of ammonium chloride. What volume of the solution described above will you need to complete the reaction without any leftover NH4Cl? ______ mL of solution

Q: help

A: Given information:Mass of MnO2 = 37.5 gMass of HCl = 43.3 g

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Q: When chemists work with solid materials, we simply weigh out amounts of solid reagents and calculate…

A: 1) Since moles  = mass / molar mass  Hence moles of  NH4Cl  = mass of  NH4Cl / molar mass of  NH4Cl…

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Q: When chemists work with solid materials, we simply weigh out amounts of solid reagents and calculate…

A: 1) Since moles  = mass / molar mass  Hence moles of  NH4Cl  = mass of  NH4Cl / molar mass of  NH4Cl…

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A: Explained as follows

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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.