Answer:
It’s +6
Explanation:
Oxidation number refers to the total number of electrons gained or lost during a chemical reaction.
In the example above sulphur has an oxidation number of +6 while the oxidation number for the calcium in CaSO4 is +2 the oxidation number for oxygen is -2.
It is more reactive the atom with a partly filled energy level because is less stable than the other case. Stability is inversely proportional to reactivity.
Answer:
C
Explanation:
The cold doesn't mean water (A), the age of the desert doesn't mean much in this context (B), that doesn't make any sense (D), but the desert being an ocean in the past does explain where the fossil came from because the organism would have been in the area before death.
Answer:
0.069 moles of glucose
Explanation:
(0.138 mol/L)(0.5 L) = 0.069 moles of glucose