Ice floats in water because
A. it has more mass and less volume than water
B. it has less mass and less volume than water
C. it has the same mass and greater volume than water
D. it has the same mass and less volume than water

C: It has the same mass and greater volume than water.

Explanation: When water freezes, it expands because of the shape of its molecule. It doesn't lose mass, but it does expand. This reduces the density of the ice to less than water's density, which allows it to float. Hope this helps!

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.