How many moles of Helium gas are in a 11.2
L container at standard temperature and
pressure?

Express the following number in scientific notation. 0.026890 =

How many grams of aluminum will there be in 98g of al2o3?

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules