Ablock of metal has a width of 3.2 cmcm, a length of 17.1 cmcm, and height of 5.0 cmcm . its mass is 1.2 kgkg . calculate the density of the metal. express your answer to two significant figures and include the appropriate units.

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above

According to the passage, which of these is true about gray water systems? a) gray water systems use plants that require less water. eliminate b) gray water systems require the use of less fossil fuels. c) gray water systems reduce the amount of fresh water used. d) gray water systems reduce the amount water used by shower heads.