How many gallons of water does it take to make a full bag of ice?

Question

How many gallons of water does it take to make a full bag of ice?

Answer 1

A 25 pound bag of ice contains just over 3 US gallons of water.

Answer 2

If the mass of the bag is m, the density of water is p_w and the density of ice is p_i than

V_i = m/ p_i

V_w= V_i p_w/p_i

= m p_w/p_i^2

typically p_w is 1 g/cm^3

V_w = m/p_i^2

Answer 3

It depends on what size the bag is...

water/ice weighs just over 8 pounds per gallon

Answer 4

3 gallons for a very large bag.

1 gallon for a medium bag.

1/2 gallon for a small bag.

Answer 5

You can, of course, reverse this question and run the experiment yourself.

Buy a bag, let it melt.  Measure the liquid.

As for the question itself - most bags are 10 lb or 25 lb/  At 8 lbs/gallon, the smaller bag is 1.25 gals.  The larger is 3.125 gal