Which of these chemicals is definitely inorganic? a. one that is made up of carbon and oxygen b. one that is made up of carbon and hydrogenc. one that is made up of nitrogen and carbond. one that is made up of nitrogen and hydrogen

If a solution had a ph of 7 what is the solution

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.