I'm assuming we're applying the standard Integral form of the calculation of work. The solution is provided in the image.
<span>radiation, hydrogen, and helium </span>
To create the shapes, stars are arranged on a piece of cardboard in the desired configuration. If the stars are placed in a smiley face pattern on the cardboard, for example, they will explode into a smiley face in the sky. In fact, you may see several smiley faces in the sky at one time.
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the answer is CaO because that's what my homework says is correct
If you search that click the first link ;)