Which of the following items best embodies the physical property of conductivity? 1. a diamond that is not easily scratched. 2. a white cotton shirt that reflects all wavelengths of light. 3. a copper penny that easily transmits electricity. 4. a teak log that has a large amount of mass for its volume.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )