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24.305 grams/mole Magnesium X 5 moles = 121.525 grams.

The correct number of significant digits depends on the values given in the question. Since there was only one value (5), and it refers to a perfect integer amount (5 moles). The question of the correct number of significant digits is undefined and depends entirely on the number of significant digits available for the Atomic Mass of Magnesium. Since there are 5 significant digits in the Atomic mass used, the answer would be correctly stated as 121.53 grams to 5 significant digits.

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14y ago
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8y ago

The mass of 5.90moles of magnesium chloride MgCl2 is 561,75 g (for the anhydrous salt).

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6y ago

5,00 g of magnesium represent 0,206 moles.

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Q: What is the mass in grams for 5 moles of Mg with the correct number of significant digits?
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