please help me

**sri340** · February 2nd 2008, 11:02 AM

When an amount of water gets frozen its volume increases by 1/11 of the original volume. By what
part does the volume decrease then when the ice melts again?

**earboth** · February 2nd 2008, 11:42 AM

Originally Posted by sri340

When an amount of water gets frozen its volume increases by 1/11 of the original volume. By what
part does the volume decrease then when the ice melts again?

If you have 1 volume unit ( $u_V$ ) of water which freezes to ice you'll get $1 u_V + \frac1{11} u_V=\frac{12}{11} u_V$

When the ice is melting to water obviously you'll get again $1 u_V = \frac{11}{11} u_V$ . That means the volume of the ice must decrease by $\frac1{12} u_V$

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