Each element shows the group and period they are through the number of energy level and valence electron in which can determine their place in the periodic table.
nucleus: controls cell
cell membrane: controls what goes in and out of a cell
cytoplasm: where chemical reactions take place
Answer:The heat source for our planet is the sun. Energy from the sun is transferred through space and through the earth's atmosphere to the earth's surface.
Explanation:
Answer:
AgCl + H2 - Chemical Equation Balancer.
So in one hour half the amount remains (that's what half life means). In two hours 1/4 (or half of half) would remain and in three hours 1/8 would remain.
So the answer is 1/8
