I need some friends. ALL of my friends just abandoned me. :(

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

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.

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.