How likely is it that you will land on a yellow space? a) certain b) impossible c) probable d) unlikely

Given your comment that there are 4 blues and 4 yellows, the answer would have to be C) probable.

It's not A) certain since it's not 100% guaranteed that it will land on yellow, because there's also blue, and it's not B) because for it to be impossible to land on yellow there would have to be no yellows (and, well, there's yellow). Lastly, it's not D since there's the same number of each color, it's not less likely to land on one over the other.

a sample of water is taken and kept in a beaker in a freezer at a constant temperature of 0°c. if the system is at dynamic equilibrium, which of these statements is true?  

there should be an link icon on the bottom of the text box you get. it looks like a paperclip!