The density of gold is \[19\ g/c{{m}^{3}}\]. If \[1.9\times {{10}^{-4}}g\]of gold is dispersed in one litre of water to give a sol having spherical gold particles of radius 10 nm, then the number of gold particles per \[m{{m}^{3}}\] of the sol will be [Pb.CET 2004]

The density of gold is \[19\ g/c{{m}^{3}}\]. If \[1.9\times {{10}^{-4}

1.	The density of gold is \[19\ g/c{{m}^{3}}\]. If \[1.9\times {{10}^{-4}}g\]of gold is dispersed in one litre of water to give a sol having spherical gold particles of radius 10 nm, then the number of gold particles per \[m{{m}^{3}}\] of the sol will be [Pb.CET 2004]
A.	\[1.9\times {{10}^{12}}\]
B.	\[6.3\times {{10}^{14}}\]
C.	\[6.3\times {{10}^{10}}\]
D.	\[2.4\times {{10}^{6}}\]
Answer» E.

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The density of gold is \[19\ g/c{{m}^{3}}\]. If \[1.9\times {{10}^{-4}}g\]of gold is dispersed in one litre of water to give a sol having spherical gold particles of radius 10 nm, then the number of gold particles per \[m{{m}^{3}}\] of the sol will be [Pb.CET 2004]

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