at is the numeric value of the melting port ocess from beginning to end? what le

Question

at is the numeric value of the melting port ocess from beginning to end? what letters represent , a t is the numeric value of the boiling port Or rocess from beginning to end? , and what letters represent Enter a numeric temperature value where the substance is a pure solid and a pure gas What is the numeric value of the heat of fusion? What is the numeric value of the heat of vaporization? NUS QUESTION: Answer just one of the following (5 pts) Why are supercooled liquids or supersaturated solutions possible (hint: think What is the molarity (M = mols/L) of a 10% HCl solution (10 g of HCl and 90 volume of the solution = 100 mL)? The molar mass of HCl is 36.5 (hint: just c by liters of solution). Be sure to show your work! ·

Explanation / Answer

I chosen to calculate molarity of 10% HCl solution.

10% HCl means 10 grams HCl present in 100 mL solution.

moles HCl = mass of HCl / molar mass of HCl

--------------- = 10g / 36.5 g/mol

--------------- = 0.27397260274 moles

Molarity = moles/ liter

given volume of solution = 100 mL, since 1 liter = 1000 mL

so 100 mL = 0.1 Liter

Now Molarity = 0.27397260274 mol/ 0.1 L = 2.7397260274 M = 2.74 M (3 significant figure)

Molarity is denoted by letter M.

Molarity of 10% HCl solution = 2.74 M

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