Answer:
A. warm up.
Explanation:
An exothermic reaction is a chemical reaction that releases energy through light or heat.
- So, the right choice is: <em>A. warm up. </em>
Answer:
207.89g
Explanation:
The formula of the compound is:
Fe₂S₃
Find the molar mass of the compound;
Atomic mass of Fe = 55.845g/mol
S = 32.065g/mol
Now;
Molar mass of Fe₂S₃ = 2 (55.845) + 3 (32.065)
= 207.89g
- Separated by an actual physical barrier
<span>- Geographic isolation can be overcome in some circumstances but the majority of the population will be isolated and therefore will diverge into different species
</span>
did this help if it did leave a thanks