Write the complete, balanced equation for the reaction between iron (iii) oxide and carbon monoxide.

Fe(iii)2O3 + 3CO ===> 2Fe + 3CO2

Explanation:

Fe(iii)2O3 + CO ===> Fe + CO2    

The best thing to do is start with the Oxygens. They are the most complicated.

 Fe(iii)2O3 +    3 CO ===> Fe +  3 CO2

Unfortunately this equation is a bit of by guess and by gosh. You need to balance the oxygens so that the total is an even number. That's because the right hand side is always going to be even. [The 2 on CO2 will make anything in front of it even).

So there are 6 oxygens on the left and 6 on the right. The carbons by accident are balanced with this maneuver. So all that is left is the irons.

Fe(iii)2O3 + 3CO ===> 2Fe + 3CO2

This equation is a bit nasty, but in higher chemistry courses, you will learn how to make it a whole lot simpler. For now you are just going to have to put up with the nastiness of the question and guess.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.