Can someone plz help me on this

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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