CH4+202->CO2+2H20 To begin the experiment, 1.65g of methane CH is burned in a bomb calorimeter

containing 1000 grams of water. The initial temperature of water is 18.98°C. The

specific heat of water is 4.184 J/g °C. The heat capacity of the calorimeter is 615 J/

Som After the reaction the final temperature of the water is 36.38°C.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.