Most human-made satellites orbit the Earth in which layer of the Earth's atmosphere

If a reaction has g of -136kj at 110°c, will it be spontaneous at this temperature (110°c)? yes or no

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

How many moles of al3+ ions are in 1.25 moles of al2o3