1.

The atomic mass of calcium is 40 unit. Whatwill be the number of calcium atoms is 0.4unit of calcium?

Answer»

tion:the ATOMIC mass of CALCIUM is 40u what will be NUMBER of calocium atom in 0.4u of calcium. But the single Ca atom is 40 u and we cannot FIND the number of ATOMS in 0.4 u because the number cannot be less than one. Please note the difference between amu and gram, mass of single atom and one mole atom.



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