Answer:
Explanation:
Given that:
P₅₀ = 20 torr in muscle
The partial pressure of O2 in lungs Po₂ = 100 torr
The hill coefficient = 3
According to the Hill coefficient;
here;
= fraction of haemoglobin monomers
= 125 θ lungs
However for θ muscle :
= 125 (θ lungs) - 1 (θ muscle)
= 124
B.
if nh =1
(θ muscle) = 1
(θ lungs) - (θ muscle) = 5 - 1
(θ lungs) - (θ muscle) = 4
This is called the surface runoff. It is part of the water cycle when the water from the mountains flow down to the rivers and empty out to the seas and oceans. Or it could also flow down through the soil. As it flows, it carries nutrients like nitrogen and sulfides, so that's why the oceans are salty because of surface water runoff.
Answer: Option (A) is the correct answer.
Explanation:
A catalyst is a substance which helps in increasing the rate of a reaction without itself getting consumed in the reaction.
A catalyst lowers the activation energy of a reaction so that reactant molecules with less energy can easily participate into the chemical reaction and thus, product formation becomes faster.
Thus, we can conclude that adding a catalyst to the reaction would reduce the activation energy of a chemical reaction.
Answer:
B.
Explanation:
Velocity: the speed of something given direction
Acceleration: increase or decrease of velocity over time
B is the answer because it is the only point on the image that has to slow down and change direction. To turn, a vehicle must slow down so it doesn't skid. Hope this helps!
a. <em>Monatomic ions
</em>
Cs is in Group 1. It has <em>one valence electro</em>n that it can lose to form a Cs⁺ ion.
Mg is in Group 2. It has <em>two valence electrons</em> that it can lose to form an Mg²⁺ ion.
N is in Group 15. It can gain <em>three valence electrons</em> to complete its octet and form an N³⁻ ion.
b. <em>Ionic compounds</em>
In an ionic compound there must be the same number of positive and negative charges.
It takes <em>three Na⁺ ions</em> to balance the charge on <em>one N³⁻ ion</em>, so the formula of sodium nitride is Na₃N.
It takes <em>three Mg²⁺ ions</em> (charge = +6) to balance the charge on <em>two N³⁻ ions</em>
(charge = -6), so the formula of magnesium nitride is Mg₃N₂.