It is A , each sodium ion is surrounded by one chloride ion . the explanation is because Chlorine needs one more electron to have a full outer most shell , and sodium has one electron in its outer most shell .
Answer is gly,his and pro
From literature, the heat of combustion of methane is 55.5 MJ/kg methane. to account for the 2 mol of methane given we convert 2 mol to kg which is determined by multiplying 2 mol by molec.weight (16g/mol) divided by 1000 to convert to kg. This is equal to 0.032 kg methane. We multiply this to 55.5 MJ/kg.The total heat released is 1.776 MJ.
Because sodium only has 1 electron in its outer shell so it wants to give away the 1 electron to have a full outer shell. When it gives away 1 electron is has 1 more protons than it does electron and since protons have a positive charge it has a charge of +1