Answer:
Activation energy, Ea, for the reaction 261.7 kj/mole
Explanation:
Given
Rate constant at 470 ⁰C (K₁) = 1.10 x 10⁻⁴ s⁻¹ and rate constant at 500⁰C (K₂) = 5.7 x 10⁻⁴ s⁻¹
Temperature (T₁) = 470 + 273 = 743 K and
temperature (T₂) = 500 + 273 = 773 K
Activation energy (Eₐ) = ?
Universal gas constant (R) = 8.314 J. K⁻¹. mole⁻¹
We know log
= 
⇒ log 
= 
⇒ 0.714 = 
⇒ Eₐ = 
j/mole = 261.7 Kj/mole
You should try one on global warming. or even the effects of cigarettes (i did one on cigarettes awhile back and i went to state finals)
Answer:
yo try and search it on Google
Answer:
The combining capacity or power of iron in FeCl3 is +3
Explanation:
The combining capacity or power of an atom of an element is the charge which that atom possesses when it combines with other atoms to form compounds. It is also known as valency or valence.
To determine the combining capacity of iron in FeCl3, the following steps are followed:
1. Group 7 elements have a combining capacity of -1, therefore, the combining capacity of Chlorine in FeCl3 is -1
2. The sum of oxidation numbers of a neutral compound is zero, therefore, Fe + 3 × Cl = 0
Let, the combining capacity of Iron be y.
y + (-1 × 3) = 0
y - 3 = 0
y = +3
Therefore, the combining capacity of iron in FeCl3 is +3
