DPP -11C12
MOLE CONCEPT
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Q1. 12.044 Γ 1023Β molecules of πΆπ2 at STP. Find
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(i) mass of the sample given
(ii) Number of moles of CO2
(iii) Volume of CO2 in L at STP
(iv) Number of βOβ atoms.
(v) Number of βCβ atoms.
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Q2. An atom of 12πΆ. Find mass in grams.
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Q3. 2560g of π8 sulphur molecule. Find
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(i) Number of molecule
(ii) Number of atom of sulphur.
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Q4.Β A sample of 684 g of πΆ12π»22π11 is taken in china dish. Find
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(i) Number of mole
(ii) Number of particles of each atom.
(iii) What will be the Number of molecules if the value is changed to 1026 g.
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Q5. Chlorophyl contains 2.4 % of Mg (by mass). Find the Mg atoms in 100g chlorophyl.
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Q6. Which have the largest number of atom? Explain.
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(i) 1g of Li
(ii) 1g of Au (Β΅ = 197)
(iii) 1g of Na
(iv) 1g of πΆπ2