Answer:
15.4: Lewis Structures: Counting Valence Electrons
Explanation:
Reduction reactions are those reactions that reduce the oxidation number of a substance. Hence, the product side of the reaction must contain excess electrons. The opposite is true for oxidation reactions. When you want to determine the potential difference expressed in volts between the cathode and anode, the equation would be: E,reduction - E,oxidation.
To cancel out the electrons, the e- in the reactions must be in opposite sides. To do this, you reverse the equation with the negative E0, then replacing it with the opposite sign.
Pb(s) --> Pb2+ +2e- E0 = +0.13 V
Ag+ + e- ---> Ag E0 = +0.80 V
Adding up the E0's would yield an overall electric cell potential of +0.93 V.
Answer:
Formula and name of the binary acids.
Hydrochloric acid - HCl - Hydrogen chloride
Hydrobromic aci - HBr - Hydrogen bromide.
Explanation:
A substance which produces hydronium ions into water called binary acids.
most of the acids contain hydrogen in their chemical formula.
A binary acid composed of a hydrogen cation bonded to the one other element.
For example, HCl,HF and HI
The name and formula of the given binary acids is as follows.
Hydrochloric acid - HCl - Hydrogen chloride
Hydrobromic aci - HBr - Hydrogen bromide.
Answer: Glaciers can erode around rock. They shift over time so it causes the rock (or glacier) to erode. If it erodes enough it creates a valley. The glacier causes it to go deeper and deeper! That is how valleys are made!
