Answer:
(a) Slightly greater than 20.0 °C
(b) 
Explanation:
Hello,
In this case, since we are talking about the equilibrium temperature that will be reached when the copper, chromium and water samples get in contact, the following equation is useful to describe such situation:

Thus, in terms of masses, heat capacities and temperatures we consider the final temperature as the unknown:
In such a way, by knowing that the heat capacities of copper and chromium are 0.386 and 0.45 J/(g°C) respectively, by solving for the equilibrium temperature one has:


Hence, the resulting temperature of water turns out slightly greater than 20.0 °C.
Best regards.
A Lewis base is characterized as any species that can donate a lone pair of electrons the Lewis acid (which has a vacant orbital for the lone pair to bond with)
Answer:
William Crookes????????????????
This is a neutralization reaction since, the hydrogen ion, H+, from the HCl is neutralized by the hydroxide ion, OH-, from the KOH to form the water molecule, H2O and salt, KCl only.
Tissues and organ systems