Answer:
Dived the numbers by each other
Explanation:
25.3/19.9
Answer:
See explanation
Explanation:
In the voltaic cell, energy is produced by spontaneous chemical reaction. One half cell functions as the anode (in this case it is the Fe/Fe^2+ half cell) while the other half cell functions as the cathode (in this case it is the the Ag/Ag^+ half cell).
At the anode;
Fe(s) -----> Fe^2+(aq) + 2e
At the anode;
2Ag^+(aq) + 2e ------> 2 Ag(s)
Overall cell equation;
Fe(s) + 2Ag^+(aq) ------> Fe^2+(aq) + 2 Ag(s)
Answer:
52.08grams
Explanation:
Heat of fusion is the energy needed to transform solid water into liquid water. Hess's Law.
The temperature change Liquid water to Solid Ice. 20 degrees C --> 0 degrees C. is 20 degree C.
The heat needed for this is = 4.184 J/(g*C) * (36 grams of water) * 20 degrees C = 3012 joules of energy.
Liquid water to solid water.
Heat of fusion of water is 335j/g = 6.02kJ/mol
The heat needed for this is 6.02 kJ/mol * 2 moles of water = 12.04 kJ = 12040 joules of energy.
Adding the two energies, we have a total energy iof 15052 joules.
15052 joules = H(vap of CCl2F2) * grams of CCl2F2 needed = 289 J/g * x grams 15052 / 289 = 52.08 grams needed.
Answer:
A. How the concentration of the reactants affects the rate of a reaction
Explanation:
Let's consider a generic reaction.
A + B ⇒ Products
The generic rate law is:
rate = k × [A]ᵃ × [B]ᵇ
where,
- rate: rate of the reaction
- [A] and [B]: molar concentrations of the reactants
As we can see, the rate law shows how the concentration of the reactants affects the rate of a reaction.
Answer:
Neutralization reactions
Explanation:
A neutralization reaction is a reaction between an acid and a base. Products of this type of reaction is water and a salt. The pH of the salt product would depend on how strong or weak the base and acid would be when they react with each other. Although the characteristics of bases and acids are practically polar opposites, when combined, they cancel each other our producing a neutralized product.
