GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Find the mass in grams of 2.25 x 1024 atoms of calcium (Ca).
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40.0 grams
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255.1 grams
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150 grams
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9.02 x 1024 grams
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Explanation:
Detailed explanation-1: -∴ The mass 6. 02×1023 atoms of calcium is 40. 08g.
Detailed explanation-2: -Expert-Verified Answer The mass of 2.5 gm atom of calcium is 100 gm. This is explained below: When we refer to mass, we mean the molar mass of any substance. Molar mass is the “total weight” of the substance for one mole of that substance.
Detailed explanation-3: -Answer and Explanation: We know that the atomic mass of calcium is ma=40.078 gmol m a = 40.078 g m o l which means that in one mole of calcium it has a mass of 40.078 grams.
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