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प्रश्न
Fill in the following blanks :
0.5 mole of calcium element has a mass of ............... .
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उत्तर
0.5 moles of calcium element have a mass of 20g.
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संबंधित प्रश्न
Calculate the molar mass of the following substance:
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Convert into mole.
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\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]
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magnesium oxide
