While on a paleontological dig, you discover a trilobite fossil in a layer of sedimentary rock.

Approximately how long ago did the layer of rock
form? Explain how you reached your conclusion.

Label a-f based on the table using c for concentrated and d for dilute

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m