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If 0.2 mol of the following substance is required how many grams of that substance should be taken? Calcium carbonate - Science and Technology

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प्रश्न

If 0.2 mol of the following substance is required how many grams of that substance should be taken?

Calcium carbonate

बेरीज
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उत्तर

Molar mass of CaCO3 = 40 + 12  + 3(16) = 100 g/mol

Number of moles of a substance = `"Mass of the substance in grams"/"Molecular mass of the substance"`

Let Mass of the substance in grams be x,

`0.2 = "x"/100 = 20`g

we need, 20 g of CaCO3 for obtaining 0.2 moles of CaCO3.

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पाठ 4: Measurement of Matter - Exercise [पृष्ठ ५७]

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बालभारती Science and Technology [English] 9 Standard Maharashtra State Board
पाठ 4 Measurement of Matter
Exercise | Q 8.3 | पृष्ठ ५७

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