Answer:
A. Lightning
Explanation:
Nitrogen is very fundamental for a wide range of life activities in both plant and animals.
Lightning which accompanies thunder during rain storm and other weather phenomenon aids the release of atmospheric nitrogen for life processes. The energy that accompanies a lightning event is mostly electrical in nature. This electrical energy is huge and very massive. As the lightning interacts with free nitrogen molecules in the atmosphere, the molecule is broken down. The free nitrogen which results then combines with oxygen in the atmossphere to form oxides of nitrogen. When oxides of non-metals dissolves in rain water, they make the water rich in nitric acid and can be brought to the biosphere for use by plant and animals.
<span>Because they are composed of material that is denser than that of the continental crust. As such oceanic crust is less buoyant than continental crust and so where oceanic crust collides with continental crust, the oceanic rust tends to be forced beneath the continental crust.</span>
Answer:
A)
Concentration of hemoglobin = weight of the hemoglobin / total volume of RBCs
Therefore,
weight of the hemoglobin = concentration of the hemoglobin x Total volume of RBCs
weight of hemoglobin = (8.7x 10⁻¹¹ x 0.34) g
= 2.96 x 10⁻¹¹ g
B)
molar mass of hemoglobin is 64500g/mol.
molar mass (m) = number of moles (n) x M,
∴ n = m/M
so number of moles in 2.96 x 10⁻¹¹ g of hemoglobin with molar mass 64500g/mole
= 2.96 x 10⁻¹¹ / 64500
= 4.5 x 10⁻¹⁶ moles
using Avogadro’s number to calculate the number of molecules from moles.
1 mole = 6.022 x 10²³ molecules
so, 4.5 x 10⁻¹⁶ moles
= 4.5 x 10⁻¹⁶ x 6.022 x 10²³
= 2.71 x 10⁸ molecules
Explanation:
Note: Average volume of a red blood cell = 87 μm³ = 8.7 x 10⁻¹¹ ml
The mean concentration of hemoglobin in red cells = 0.34g/ml.
Answer:
both igneous and metamorphic rock I believe
Explanation:
I I learned this in fourth grade I'm not sure if I'm correct if I remember correctly then it's these two sorry if it's wrong also tell me if it's wrong I'll try to tell you the right answer if it is wrong okay
Shortening of the telomeres hopes this helped :)
