What is the Molarity of 25 g of C6H12O6 in 25 mL of H2O?

5.6 M

Explanation:

Given data:

Mass of C₆H₁₂O₆ = 25 g

Volume of solution = 25 mL (25 mL×1 L/1000 mL=0.025 L)

Molarity of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Number of moles of C₆H₁₂O₆:

Number of moles = mass/molar mass

Number of moles = 25 g/ 180.16 g/mol

Number of moles = 0.14 mol

Molarity:

M = number of moles / volume in L

M = 0.14 mol/ 0.025 L

M = 5.6 M

chemical energy is stored in the chemical bonds of atoms and molecules. it can only be seen when it is released in a chemical reaction. when chemical energy is released, the substance from which the energy came is often changed into an entirely different substance.

this chemical reaction releases energy in the form of light and heat. chemical energy is the potential energy stored in the arrangement of atoms within molecules. breaking chemical bonds requires energy, while forming new chemical bonds releases energy.

the atp molecule can store energy in the form of a high energy phosphate bond joining the terminal phosphate group to the rest of the molecule. in this form,energy can be stored at one location, then moved from one part of the cell to another, where it can be released to drive other biochemical reactions.

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