What is the empirical formula for the compound, aluminum hydroxide?

Which of the following single replacement reactions will not occur as written?

What is the Excel syntax that will find the probability that a randomly selected exam will require less than 20 minutes to grade?

Determine the probability that a randomly selected bunch of bananas will weigh more than 3.0 pounds?

What is the probability that two or three of the nursing homes received five stars? 

Sulfur and fluorine react to form SF6 via the following process: S (s) + 3 F2 (g)

What is the mass % of carbon in CO2 ?

Polonium-210, a highly radioactive isotope, was used in the 2006 murder of Alexander Litvinenko  in London.  How many neutrons are there in one atom of this isotope?

Which dead scientist was able to determine the charge and mass of an electron by irradiating oil droplets with x-rays and observing their fall in a chamber?

A table of metal densities is shown below. If a cube of an unknown metal measures 0.250 cm on one side and the mass of the cube is 0.095 g, what is the likely identity of the unknown metal?