Respuesta :
Because we are only asked for the number of moles, we don't need information about density. Concentrations are expressed as 0.135 M AgCl or 0.135 mol AgCl per liter of solution. The solution is as follows:
AgCl Moles = Molarity * Volume
Mole AgCl = 0.135 mol / L * 244 mL * 1 L / 1000 mL
Mol AgCl = 0.03294 mol
Further Explanation
Mol is a unit of measurement in the International Unit System (SI) for the number of substances. This unit is defined as the number of chemicals containing the number of representative particles, for example, atoms, molecules, ions, electrons, or photons, which is equivalent to the number of atoms in 12 grams of carbon-12 (12C), carbon isotopes with definitive standard atomic weight 12. Number this is expressed as an Avogadro number, with an approach value of 6.022140857 × 1023 mol − 1. Moles are one of the basic units of SI and are denoted by moles.
Until 2011, moles were defined by the International Bureau of Weights and Measures as the number of substances in a system containing the same number of basic particles (for example atoms, molecules, ions, electrons, photons) as the number of atoms in 0.012 kilograms of carbon-12 (12C), isotopes carbon with a standard atomic weight of 12. So, by this definition, one pure 12C mole has an exact mass of 12 g. Also from this definition, X mole of any substance will contain the same number of molecules as X mole of other substances (although the mass may be different).
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Details
Grade: College
Subject: Chemistry
Keyword: moles, weight, number
The number of moles of AgCl contained in the solution is 0.03294 moles
From the question,
We are to determining the number of moles of AgCl present in the solution.
Using the formula
Number of moles = Concentration × Volume
From the question
Concentration of the AgCl = 0.135 M
Volume of the solution = 244 mL = 0.244 L
Putting the values into the equation, we get
Number of moles = 0.135 × 0.244
Number of moles of AgCl = 0.03294 moles
Hence, the number of moles of AgCl contained in the solution is 0.03294 moles
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