Answer:10^27 atoms in an apple
Explanation:
I believe the answer is C which is supporting a variety of organisms, cleaning oil from oceans, producing oxygen.
Helium has the smallest atomic radius® Α⇒Ω
Answer:
1. How do metals and non-metals react with acids?
Ans : Non metals does not react with acids while metals react with acids and produce hydrogen gas that burns with a 'pop'sound.
2. Write and explain the chemical equation for the reaction of magnesium with sulphuric acid and aluminium with hydrochloric acid.
Magnesium + sulphuric acid = Hydrogen + salt
Mg(s) + H2SO4 (aq) MgSO 4(aq) +H2 (g)
Aluminium + Hydrochloric acid = Hydrogen + Aluminium chloride
2Al(s)+6HCl(aq)→2AlCl3(aq)+3H2(g)
Phenolphthalein
In acid it is colourless and in water also colourless