Africa, South America, Antarctica, Australia, and the subcontinent of India would be the answer…
Answer:
Tropical forests have the highest biodiversity and primary productivity of any of the terrestrial biomes.
NaCl, molecules are ionic bonding this is covalent
Answer:
e. oxygen is a reactant in combustion and pure oxygen increases the reactant concentration
Explanation:
The reaction of a burning match is combustion. In this combustion, the organic components of the match (such as cellulose, C₆H₁₀O₅) react with oxygen, producing water and carbon dioxide:
- C₆H₁₀O₅(s) + 6O₂(g) → 5H₂O(g) + 6CO₂(g)
Seeing as oxygen is a reactant and not a catalyst nor product, and that nitrogen plays no part in the reaction, <em>the only correct answer is option e</em>.
1 mole --------------- 6.02 x 10²³ atoms
( moles iron) -------- 5.0 x 10²⁵ atoms
( moles iron ) = 5.0 x 10²⁵ x 1 / 6.02 x 10²³
moles iron = 5.0 x 10²⁵ / 6.02 x 10²³
= 83.05 moles of iron
hope this helps!