The answer c) A- Cell membrane because it selects what molecules enter/exit the cell
Humans disturb the earth and because of this, the earth is weakened
A glow stick contains two chemicals and a suitable dye (sensitizer, or fluorophor). This creates an exothermic reaction. The chemicals inside the plastic tube are a mixture of the dye and diphenyl oxalate. The chemical in the glass vial is hydrogen peroxide.
Divide 180kg and 90m3 and your density will be 2kg/m3
Answer:
621.2090000000001 grams
Explanation:
1 moles Calcium to grams = 40.078 grams
15.5*40.078 = 621.2090000000001 g
