aarizmallick27 aarizmallick27
  • 11-10-2020
  • Chemistry
contestada

How many moles of Magnesium are present in 0.478 g of the element?
(Atomic mass: Mg-24 u)

Respuesta :

samueladesida43
samueladesida43 samueladesida43
  • 16-10-2020

Answer:

0.0199moles

Explanation:

The number of miles of a substance can be calculated using the formula:

Number of moles (n) = Mass (M) / Molar mass (MM)

In this question, the mass of Magnesium element (Mg) = 0.478 g while the atomic mass is 24

Therefore, number of moles of Magnesium is:

Moles = 0.478/24

Moles = 0.01992

Hence, 0.0199 moles of Magnesium are contained in 0.478 g of the element.

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