Question

1. Indicate which of the following would be considered physical properties (P) and which would be considered chemical properties (C) of iron. ー-a. Iron reacts with oxygen to form iron oxides. b. Iron is a good conductor of heat and electricity. C. Iron melts at 1535°C. d. When iron is immersed in a solution of hydrochloric acid, hydrogen gas is produced. e. Iron becomes red-hot when heated. __ f. A500-cc volume of iron has a mass of 3930 g. Iron can be polished to a high luster. 2· The mass of 10.00 mL of carbon tetrachloride was measured to be 15.94 density of carbon tetrachloride? what is the Density (a) The density of water is 1.00 g/mL. Carbon tetrachloride is insoluble in water. Would carbon tetrachloride float on water or sink beneath water when they are combined? 3. (b) Hexane has a density of 0.66 g/mL, and is also insoluble in water. Would hexane float on water or sink beneath water when mixed with water? A student determined that an unknown liquid was soluble in an equal volume of water, had a density of approximately 0.80 g/mL and a boiling temperature of 55.5°C. Consult Table 1 and identify the liquid. 4. The liquid is:

Answer 1