A sample of sodium has a mass of 46 g. What is the mass of the same number of calcium atoms as sodium atoms present in given sample ?

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46 g

20 g

40 g

80 g

answer is D.

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Detailed Solution

Number of sodium =4623=NA=2NANumber of calcium atoms = Number of sodium atoms = 2NAMass of ca atoms = =2NANA×40=80 g

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