Hydrocarbons. They usually burn. In fact, I can't think of one that does not.
Answer:
1.06 × 10^5 J
Explanation:
We have to use the formula;
log(k2/k1) = Ea/2.303 ×R (1/T1 - 1/T2)
Given that;
k1 = 1.10 × 10-4 s-1
k2= 1.02 × 10-3 s-1
Ea=?
R=8.314 Jmol-1K-1
T1= 470. °C
T2= 510. °C
Hence;
log(1.02 × 10-3 s-1/1.10 × 10-4 =Ea/2.303 ×8.314(1/470 -1/510)
0.9672 = Ea/19.122(2.13 - 1.96) × 10^-3
0.9672= Ea/19.122(0.17) × 10^-3
0.9672= 1.7 ×10^-4 Ea/19.122
19.122 × 0.9672 = 1.74 × 10^-4Ea
Ea= 19.122 × 0.9672/1.74 × 10^-4
Ea= 18.495/1.74 × 10^-4
Ea= 1.06 × 10^5 J
Answer:
The mass is
Explanation:
From the question we are told that
The current supplied is
The time taken is t = 37.0 sec
Generally the charge been deposited on the cathode is mathematically represented as
Substituting values
Generally 1 mole of the lead deposited contains
Then would contain how many moles
Not let say x is the number of moles deposited then
Using this mathematical relation
From the the question we are told that lead is been oxidized to lead 2 oxide which implies that the two electron would be accepted by the lead cation
Hence the number of moles that would be deposited at the cathode is
Now the molar mass of lead is constant with a value
Generally mass is mathematically represented as
For lead
Substituting values
We can infer that 4 moles of iodate are produced from 1 mol of thyroxine since all of the iodide is transformed to iodate.
<h3>Describe thyroxine.</h3>
The primary hormone that the thyroid gland releases into the bloodstream is thyroxine. It is the inactive form, and organs like the liver and kidneys convert the majority of it into the active form triiodothyronine.
<h3>What occurs if thyroxine levels are too high?</h3>
When your thyroid gland generates too much of the hormone thyroxine, you get hyperthyroidism (overactive thyroid). Your body's metabolism may speed up as a result of hyperthyroidism, resulting in unexpected weight loss and a swift or erratic heartbeat.
<h3>What distinguishes thyroxine and TSH from one another?</h3>
Your thyroid gland then releases T4 and T3 with the aid of the TSH. TSH is essential to the system's operation. Your metabolism, emotions, and body temperature are all influenced by thyroxine (T4), among other things.
learn more about Thyroxine here
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Higher average temperatures than higher latitudes