C is the correct answer (CaF2) (sorry dont have subscript)
Explanation: synthesis reaction forms a compound and calcium reacting with fluorine produces Calcium Fluoride (CaF2) chemical name
<span>2.28 kg x 213 kJ/kg = 486 kJ = 4.86E+05 J</span>
Pressure does not affect the voltage produced in a voltaic cell.
There is an excess of oxygen, the two main products should be carbon dioxide gas and water vapor. If the oxygen supply is limited, the fuel will undergo incomplete combustion and produce carbon monoxide, water, and sometimes carbon.
Hope this helped! :)