Answer: Mantle
Explanation:
there are 3 layers of the earth- core, mantle and crust. The layer found directly above the earth's core is the mantle.
Answer:
The molecules in 2,14 mol CO is 1, 29 x 10 ^ 24. See the explanation below, please.
Explanation:
We use the number of Avogadro:
1 mol----- 6, 02 x10 ^23 molecules
2,14 mol---- x =(2,14 mol x6, 02 x10 ^23 molecules )/ 1mol
x=1, 29 x 10 ^ 24 molecules
Answer:
1.3 s
Explanation:
A first-order reaction can be represented through the following expression.
ln [A] = ln [A]₀ - k.t
where,
[A] is the concentration of the reactant A at a certain time t
k is the rate constant
When the concentration decreases to half its value ([A] = 0.5 [A]₀), the time elapsed is known as half-life t(1/2).
ln (0.5 [A]₀) = ln [A]₀ - k.t(1/2)
ln 0.5 = -k.t(1/2)
t(1/2) = -ln 0.5 / k = - ln 0.5 / (0.54 s⁻¹) = 1.3 s
Answer:
The lungs' main role is to bring in air from the atmosphere and pass oxygen into the bloodstream. From there, it circulates to the rest of the body. Help is required from structures outside of the lungs in order to breath
Explanation:
The phase in which the molecules move fastest is in water vapor or as a form of a gas.