Draw a 'dot and cross' diagram to show the bonding in aluminium fluoride, AlF3- (Only the outer electrons need to be shown.)​

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.

Which statement best describes isomers? a. isomers are alcohols that have the same functional group. b. isomers have at least one carbon-carbon double bond. c. isomers have the same molecular formula but different structural properties.