What is the molarity of a solution containing 3.5 moles of HCl in 5.0 L of water?
1 answer:
Answer:
0.70 M
Explanation:
- Molarity is the concentration of a given solution in moles per liter.
- Molarity is given in moles per liter of solution.
- It is calculated by dividing the moles of solute by the volume of solution.
In this case;
We are given;
Number of moles of HCl = 3.5 Moles
Volume of solvent, H₂O is 5.0 L
But,
Therefore;
= 0.70 M
Thus, the molarity of the solution is 0.70 M or 0.70 moles/liter
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Answer:
5*10²⁴ chlorine atoms are found in 8.3 moles of chlorine.
Explanation:
Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression. Avogadro's number applies to any substance.
Then you can apply the following rule of three: if 1 mole of the compound contains 6.023 * 10²³ atoms, 8.3 moles of the compound how many atoms does it have?
amount of atoms≅ 5*10²⁴ atoms
<u><em>5*10²⁴ chlorine atoms are found in 8.3 moles of chlorine.</em></u>