Massive stars fuse hydrogen, then helium, and finally develop carbon-oxygen cores. At about 1 billion K, they are able to ignite carbon, then oxygen, neon and magnesium fuse to make silicon, and finally iron. Because more and more protons are used up to make heavier atoms, we could expect

What is important to study for nios grade 12 chemistry? i have only one month left.

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

How many atoms are in 2 moles of phosphorus