C) 15 J because it cannot gain energy or lose mass
webpage of a scientist who is trying to sell a new invention
trying to dell = vested interest.
umiversity should be objective impartial
This should help
there always needs to be 2 electrons in the first shell then 8 electrons in each shell and continue till you not have any more number of electron left
Answer:
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Explanation:
The atmosphere is a mixture of nitrogen (78%), oxygen (21%), and other gases (1%) that surrounds Earth. High above the planet, the atmosphere becomes thinner until it gradually reaches space. The atmosphere is an important part of what makes Earth livable.