The practice that has been able to save some organisms from extinction is cross breeding.
<h3>What is cross breeding?</h3>
Cross breeding is the process of producing separate strains of the same species in order to create new traits.
Living organisms are bound to go extinct when faced by certain unfavorable conditions that cannot be adapted to.
However, the production of resistant strains of the same species of an organism via cross breeding can help prevent them from going extinct.
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In a homogenous
mixture, sugar was the solute and water was the solvent. Solubility is the maximum
amount of a solute that dissolves in a given amount of solvent at a constant
temperature. Solutes
are more soluble in a given solvent at higher temperatures. Therefore, when
temperature increases, the solubility of the solute also increases.
<span>Moreover, the solubility of the substance ranges from infinitely soluble such
as alcohol in water, to poorly soluble like silver chloride in water and the
species that dissolves, the solute, can be another liquid, gas or a solid.</span>
Answer:
Mole fraction is 0.2
Explanation:
You have to apply the colligative property about vapour pressure which formula is:
ΔP = P° .Xm
Where ΔP = P° - P
Pressure of vapour from pure solvent (P°) - Pressure of vapour from solution
40 Torr - 32 Torr = 40 Torr . Xm
8 Torr / 40 Torr= 0.2. > Xm
PV = nRT
P = 157 kPa = 157 × 10³ Pa
V = 265 ml = 0.265 l
T = 20°C = 293 K
m = 0.479 g
PV•M = mRT
M = (mRT)/(PV)
M = 0.479 g × 8.314 kPa.l/(mol.K) × 293 K / (157 kPa × 0.265 l)
M ≈ 28.04579 g/mol.
Hence, the Molar Mass of Dinitrogen or Nitrogen Gas is 28 g.
