Which of the following contains significant amounts of aluminum oxide (three correct answers): a. alumina b. corundum c. feldspar d. sandstone e. silica f. kaolinite g. quartz h. bauxite

a. alumina

b. corundum

h. bauxite

Explanation:

The following compounds have the maximum amount of Aluminum oxide -

Alumina -

Alumina is known as the aluminium oxide , with a formula of ,

It is the most commonly occuring oxide of Aluminum metal .

Corundum -

It is the crystalline form , with the molecular formula of ,

It also have some trace of other metals like , chromium , vanadium , titanium.

bauxite -

It is the sedimentary rock , which has very high quantity of Aluminium metal .

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it

im not exactly sure but i think its b!