I need this as soon as possible! help :( You are conducting an experiment with Thallium which has two isotopes, Thallium- 203 and Thallium- 205. Thallium's atomic number is 81. The percent abundance of the two isotopes respectively, Thallium- 203; 35 % and Thallium- 205; 65%. Please calculate the average atomic mass of Thallium.

Sun is explosive itself spread 9 planets.earth is 3rd explosive in the solar system about 500 hundred million years ago . first earth became ice age and freezing climate.centre of earth magma. north zone is artic . south is anatric

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

Decomposition is the cycle at which bacteria breaks down any organic material into the soil