What is the mass of precipitate formed when 50 mL of 16.9% solution of AgNO₃ is mixed with 50 mL of 5.8% NaCl Solution? (Ag=107.8, N=14, O=16, Na=23, Cl=35.5)
Options
(a) 28 g (b) […]
If avagadro number is changed from 6.022 x 10²³ mol⁻¹ to 6.022 x 10²⁰ mol⁻¹, this would change
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(a) the definition of mass in units of grams (b) the mass of one […]
The number of water molecules is maximum in
Options
(a) 1.8 molecules of water (b) 1.8 gram of water (c) 18 gram of water (d) 18 moles of water
Correct Answer:
18 moles […]
20.0 g of a magnesium carbonate sample decomposes on heating to give CO₂ and 8.0 g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample?
Options
(a) 75 (b) […]
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