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The density of gold is 19 g/cm3. If 1.9×10−4 g of gold is dispersed in 1 L of water to give a sol having spherical gold particles of radius 10 nm, the number of gold particles per mm3 of the sol will be ___ ×106.

Answer» The density of gold is 19 g/cm3. If 1.9×104 g of gold is dispersed in 1 L of water to give a sol having spherical gold particles of radius 10 nm, the number of gold particles per mm3 of the sol will be ___ ×106.


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