What is the density of a metal cube (exactly 2 cm on each side that weighs 21.6g?

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

Find the mass by adding the numbers from the three sliders

Atoms in a molecule are bonded together by sharing gaining or losing_