Answer:
1.89 V
Explanation:
To calculate the standard cell potential, subtract the reduction potential of the anode from the reduction potential of the cathode.
So for your calculation,
-0.22 V - (-2.11 V)= 1.89 V
Answer:
Positive
Explanation:
For the most effective hot pack, the temperature change should be <u>positive</u>.
<em>Hot packs are generally utilized for their heat-producing abilities. Hence, the reactions leading to the activation of hot packs are usually exothermic, that is, heat energy generating. In other words, positive or increased temperatures must be generated when hot packs are activated.</em>
This is unlike cold packs which are utilized for the cold-generating abilities. Reactions leading to their activations must be endothermic, that is, heat-absorbing.
<span>A full filled atom is more
stable than the half filled atom. This is because it has an equal number of
protons and electrons. The protons cancel out the electrons and thus
giving it a net charge of zero. It cannot be further ionized.</span>
Because iron is a metallic solid and it takes longer to heat up because it is compounded more then other solids which takes longer because the atoms in the heat take longer to heat it up.
