How many moles of H2 can be made from the complete reaction of 4.2 moles of AI?
Given: 2 AL + 6 HCl → 2 AICI3. + 3 H2

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

The grooves or folds of the brain are called

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive