I need answers asap it's due by end of today please help out

What is the percentage composition of carbon in the compound ch4

What is the binding energy of a nucleus that has a mass defect of 5.81*10-^29 kg a 5.23*10-^12 j b 3.15* 10^12 j c 1.57*10-3 j d 9.44*10^20 j

I’m an electrically neutral atomic any element, there are equal numbers of