1. Alpha decay of an element with an atomic number of 84 and a mass number of 210 2. Beta-plus decay of an element with an atomic number of 11 and a mass number of 22
3. Beta-minus decay of an element with an atomic number of 11 and a mass number of 24
4. Gamma decay of an element with an atomic number 27 and a mass number of 60
5. Nuclear fission of an element with an atomic number of 92 and a mass number of 235
6. Nuclear fusion of deuterium and tritium into helium

chemical energy is stored in the chemical bonds of atoms and molecules. it can only be seen when it is released in a chemical reaction. when chemical energy is released, the substance from which the energy came is often changed into an entirely different substance.

this chemical reaction releases energy in the form of light and heat. chemical energy is the potential energy stored in the arrangement of atoms within molecules. breaking chemical bonds requires energy, while forming new chemical bonds releases energy.

the atp molecule can store energy in the form of a high energy phosphate bond joining the terminal phosphate group to the rest of the molecule. in this form,energy can be stored at one location, then moved from one part of the cell to another, where it can be released to drive other biochemical reactions.

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.