Answer:
<u>-16200J</u>
Explanation:
(257J/g)(62.9g)
eliminate the variables
u get 16165.3
go to 3 significant digits
u get 16200
and since it is freezing we are taking out energy so it would be
-16200J
Answer:
C. Cs, because it has the lower ionization energy and more easily gives up its valence electrons to participate in a reaction.
Explanation:
The Cs will produce the most hydrogen gas because it has a lower ionization energy and more easily gives up its valence electrons to participate in the reaction.
- Ionization energy is the energy required to remove the most loosely held electrons in an atom.
- Atoms with lower ionization energy readily goes into reactions.
- This is because they will present little barrier for the reaction to occur.
Answer:14.93
Explanation:heat gained=heat lost
120.5 ×4.184×change=7525
7525÷504.172
Ans14.925
C) 12protons 10 electrons
8.1 if I recall quick. Sorry