Suppose new reserves of fossil fuels were found and a way to burn fuels was developed that did not release pollutants and carbon dioxide into the atmosphere. Should fossil fuels still be
conserved?

What is the ph of a solution with a 1.50 × 10−9 m hydroxide ion concentration?

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?