Answer:
ΔU = Q − W
Explanation:
the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy.
ΔU is the change in internal energy U of the system. Q is the net heat transferred into the system—that is, Q is the sum of all heat transfer into and out of the system.
The answer is: single replacement.
Single replacement is reaction where neutral element metal or nonmetal become an ion as it replaces another ion in a compound.
In this balanced chemical reaction magnesium (Mg) replaces copper (Cu).
Magnesium changes oxidation number from 0 to +2 (oxidation) and copper changes oxidation number from +2 to 0 (reduction).
Reactivity series is an empirical progression of a series of metals, arranged by their reactivity from highest to lowest (alkaline metals have highest reactivity and Noble metals lowest reactivity):
K > Ba > Sr > Na > Ca > Mg > Be > Al > Mn > Zn > Cr> Fe > Cd > Co > Ni > Sn > Pb > H(in acids) > Cu > Hg > Ag.
Metal higher in the reactivity series will displace another and it will be oxidized.
Answer:
A water repellent protein that divides into hard and soft types
CuO2 + N are the products