Physics
Which elements are malleable and good conductors of electricity?

Iodine and xenon
Tin and silver
Tin and xenon
Iodine and silver

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Physics
An egg sinks in soft water but floats in a concentrated solution of salt because

Water has high surface tension
The density of salt solution exceeds the density of eggs
Egg absorbs salt from the solution and expands
Albumin dissolves in salt solution and egg becomes lighter

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