Answer:
Half-life for this reaction is 2.56s
Explanation:
The general expression in a reaction that follows first-order is:
Ln[A] = -kt + ln[A]₀
<em>Where [A] is concentration of reactant after time t, </em>
<em>k is rate constant = 0.271s⁻¹</em>
<em>[A]₀ is initial concentration of reactant.</em>
<em />
Half-life is defined as the time required to decrease the initial concentration of the reactant (I2 in this case) halved.
If [A]₀ = 1
[A] = 1/2
Solving the equation:
Ln[1/2] = -0.271s⁻¹*t + ln[1]
Ln[1/2] = -0.271s⁻¹*t + 0
Ln[1/2] = -0.271s⁻¹t
Ln 2 = 0.271s⁻¹
2.56s = t
Half-life for this reaction is 2.56s
<em />
The formula for molarity is: mol/L. so it would be 2.0 mol/ 6.0 L.
the answer is: .33 M
hope this helps!
The state in which the forward reaction rate and the reverse reaction rate are equal. Th concentration of chemicals don’t change
Exothermic is the release of heat. Exo as in exit to leave and thermos, the Greek word for heat. Endothermic is the absorption of heat. So if a chemical reaction is exothermic the reaction loses heat and it feels warm to you. If it is endothermic, it absorbs heat. If you are holding a beaker with an endothermic reaction, it will absorb the heat from you and therefore these re
actions feel cool to touch!
A small atomic radius
Explanation:
Elements like calcium located towards the top of a group have high attraction for their valence electrons because they have a small atomic radius.
The farther electrons are from the nucleus the lesser the attraction from the nucleus on them.
Atomic radius is taken as half of the internuclear distance between two covalently bonded atoms of non-metallic atoms or half the distance between two nuclei in the solid state between metals.
The smaller the atomic radius the greater the pull of the valence electrons in an atom.
Down the group, atomic radius increases due addition of new electronic shells.
learn more:
Effective nuclear charge brainly.com/question/5441986
#learnwithBrainly