Answer:
Only Organism Z is alive, and Organism X has been dead longer than Organism Y.
Explanation:
After the death of an organism, there is radioactive disintegration of C-14 allotrope of carbon, which increases the ratio of C-12 to C-14 in a dead organism as compared to a living organism.
Answer:
mass of Cl₂ = 1.46 g
Explanation:
given data
mass of phosphorus trichloride = 3.66 G
mas of chlorine gas = ?
efficiency = 83.7 %
balanced chemical equation
2P + 3Cl₂ → 2PCl₃
The mole ration of chlorine and phosphorus trichloride = 3 : 2
First we will find out number of moles of Cl₂ and PCl₃
As we know that:
number of moles = mass / molar mass
number of moles of PCl₃ = 3.66 g / 137.33 g.mol-
number of moles of PCl₃ = 0.027 mol
As the mole ratio of PCl₃ and Cl₂ = 2 : 3
so number of moles of Cl₂ = (0.027 ×3) / 2
number of moles of Cl₂ = 0.041
Now we find the mass of Cl₂
mass of Cl₂ = moles × molar mass
mass of Cl₂ = 0.041 mol × 35.5 g/mol
mass of Cl₂ = 1.46 g
Answer:
C. Solids made of molecules
The answer is option C.
That is it is a heterogeneous mixture.
Heterogeneous mixture have the following properties:
1. Different components could be observed in the substance.
2. Different samples of the substance appeared to have different proportions of the components.
3.The components could be easily separated using filters and sorting.