Why does a solid change to liquid when heat is added?
o a. the spacing between particles decreases.
b. particles lose energy.
c.
the spacing between particles increases.
d. the temperature decreases.
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Stage in which a star’s outer layers have started to cool and grow outward?

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98