Stacy reads that a 50: 50 mixture of methanol and water is best for keeping a car’s radiator from freezing when the temperature goes down to –40°c. design an experiment to test this finding. you have a –40°c freezer, water, methanol, graduated cylinders to measure volume, several plastic beakers, and a watch at your disposal. be sure to state your hypothesis, procedure, and any controls in your experiment. what are the dependent and independent variables? explain the possible results if your hypothesis is true.

Hypothesis: If a mixture of methanol and water is made with an equal amount of water and methanol, more water than methanol, and less water than methanol, then the mixture with less water than methanol will be the best at resisting freezing when in temperatures of -40 degrees Celsius. You have to first measure equal amounts of methanol and water in graduated cylinders then pour into plastic beaker. For a second trial measure two parts water and one part methanol then pour them in separate beaker.  

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.