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Taking into account the definition of molarity, 14.028 grams of sodium chloride must be added to make 400 mL of a 0.600 M sodium chloride.
<h3>Definition of molarity</h3>Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:
Molarity is expressed in units .
In this case, you know:
- Molarity= 0.600 M
- number of moles= ?
- volume= 400 mL= 0.400 L (being 1000 mL= 1 L)
Replacing in the definition of molarity:
Solving:
number of moles= 0.600 M× 0.400 L
number of moles= 0.24 moles
<h3>Mass of sodium chloride</h3>Being the molar mass of sodium chloride 58.45 , that is the amount of mass that a substance contains in one mole, the mass of sodium chloride can be calculated as:
0.24 moles×58.45 = 14.028 grams
Finally, 14.028 grams of sodium chloride must be added to make 400 mL of a 0.600 M sodium chloride.
Learn more about molarity:
The balanced chemical equation for the reaction is:
3CH₄ + 3 N₂Cl₄ → 3 CCl₄ + 3N₂ + 6H₂
<h3>What is a balanced chemical equation?</h3>A balanced chemical equation is a chemical reaction that has equal numbers of moles of chemical substances both in the reactant and the product side.
From the missing image that is attached below, we can see that the picture depicts that we have:
The reactant side:
- 3 molecules of CH₄ and 3 molecules of N₂Cl₄
The product side:
- 3 molecules of CCl₄, 3 molecules of N₂ and 6 molecules of H₂
Therefore, the balanced chemical equation for the reaction is:
3CH₄ + 3 N₂Cl₄ → 3 CCl₄ + 3N₂ + 6H₂
Learn more about Balanced chemical reactions here:
