Answer:
option b
Explanation:
When the energy is released the process is called exothermic reaction. This happens when the bonds are broken in the reactants and the system release energy.
I don’t understand the question
El Niño refers to the above-average sea-surface temperatures that periodically develop across the east-central equatorial Pacific. It represents the warm phase of the ENSO cycle. La Niña refers to the periodic cooling of sea-surface temperatures across the east-central equatorial Pacific.
(weather patterns not girl and boy)
Usually look for the words that come before or after the word. Looking for these will help you find the definition of the word as you are using your context clues.
Answer:
0.5 mol HCl
Explanation:
2.5 mol/L *0.200 L = 0.5 mol NaOH
NaOH + HCl ---> NaCl + H2O
from reaction 1 mol 1 mol
given 0.5mol x mol
x= 0.5*1/1= 0.5 mol HCl
