Identify the characteristics that describe how human proteins are assembled. Check all that apply.
2 answers:
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Answer:
E cell = +1.95 V
Explanation:
At Anode : Oxidation reaction takes place
At Cathode : Reduction reaction takes place
The reaction with lower value of reduction potential will undergo Oxidation
E = -1.18 V
This equation undergo oxidation reaction and become:
Anode(Oxidation-Half) :
E = +1.18 V
Cathode(Reduction-Half) :
E =+0.77 V
To balance the reaction multiply reduction-Half with 2.We get :
Note that E is intensive property , do not multiply E of oxidation-half with 2
Ecell = 0.77 -(-1.18)
E = +1.95 V
59.43 grams of SiCl4 is formed when 10.0 grams of Si and 60.0
grams of Cl2 react.
Explanation:
Data given:
mass of Si = 10 grams
mass of chlorine gas = 60 grams
molar mass of Si = 28 grams/mole
molar mass of chlorine gas = 70.9 grams/mole
molar mass of Si = 169.8 grams/mole
Balanced equation:
Si + 2 ⇒ Si
moles of Si =
moles of Si =
moles of Si =0.35 moles
moles of chlorine gas =
moles of chlorine gas = 0.84 moles
from the balance reaction,
1 mole of Si gives 1 mole of Silicon tetrachloride
0.35 moles of Si will give 0.35 moles of silicon tetrachloride
mass = atomic mass x number of moles
mass = 169.8 x 0.35
mass = 59.43 grams
2 moles of chlorine gas gives 1 mole of silicon tetrachloride
0.84 moles of chlorine will give
0.84 x 2 moles= 1.68 moles of silicon tetrachloride
mass = 1.68 x 169.8
= 285.26 grams
Mass of silicon tetrachloride fromed is 59.43 grams as silicon is the limiting reagent.