The answer is b, because solid water is less dense than liquid water and that is why it floats. This property of water is due to hydrogen bonds between the water molecules because <span>in ice, the regular pattern of hydrogen bonds pushes the molecules further apart leaving a lot of empty space between the water molecules. </span>
CaSO4.2H2O is a white crystal at room temperature. It is soluble in water. Gypsum can be used as a fertilizer.
This Might Be The Answer Idk?
P x V = n x R x T
1.00 x V = 3.50 x 0.082 x 273
1.00 x V = 78.351
V = 78.351 / 1.00
V = 78.351 L