The answer to this question would be D. Hydrophilic.
The word hydrophilic mean attracted by water. That means the molecule has a force to attract water molecule, thus be able to dissolve in water. The polarity of the molecule would determine whether a molecule hydrophilic or not.
Its opposite would be hydrophobic which the molecule can't dissolve in water. One example of this would be oil or fat. That is why sometimes it is called lipophilic too.
Lets say foxes hunt rabbits. If their are too many foxes then they will compete for the rabbits. The rabbits get outnumbered by the amount of foxes so the foxes kill all the rabbits and the rabbits could eventually go extinct.
Explanation:
The dimensions of a standard backpack is 30cm x 30cm x 40cm
The mass of an average student is 70 kg
We know that, the density of gold is 19.3 g/cm³.
Let m be the mass of the backpack. So,
![\text{density}=\dfrac{\text{mass}}{\text{volume}}\\\\m=d\times V\\\\m=19.3\ g/cm^3\times (30\times 30\times 40)\ cm^3\\\\m=694800\ g\\\\\text{or}\\\\m=694.8\ kg\approx 700\ kg](https://tex.z-dn.net/?f=%5Ctext%7Bdensity%7D%3D%5Cdfrac%7B%5Ctext%7Bmass%7D%7D%7B%5Ctext%7Bvolume%7D%7D%5C%5C%5C%5Cm%3Dd%5Ctimes%20V%5C%5C%5C%5Cm%3D19.3%5C%20g%2Fcm%5E3%5Ctimes%20%2830%5Ctimes%2030%5Ctimes%2040%29%5C%20cm%5E3%5C%5C%5C%5Cm%3D694800%5C%20g%5C%5C%5C%5C%5Ctext%7Bor%7D%5C%5C%5C%5Cm%3D694.8%5C%20kg%5Capprox%20700%5C%20kg)
An average student has a mass of 70 kg. If we compare the mass of student and mass of backpack, we find that the backpack is 10 times of the mass of the student.
Moles = n = 3.91 mol
Pressure = P = 5.35 atm
Temperature = T = 323 K
Volume = V = ?
Formula used: Ideal Gas Equation is used,
P V = n R T
Solving for V,
V = n R T / P
Putting Values,
V = (3.91 mol × 0.0825 atm.L.mol⁻¹.K⁻¹ × 323 K) ÷ 5.35 atm
V = 19.36 L
Molar mass K₂SO₄ = 174.259 g/mol
![n = \frac{m}{M}](https://tex.z-dn.net/?f=n%20%3D%20%20%5Cfrac%7Bm%7D%7BM%7D%20)
![n = \frac{15.0 g}{174.259g/mol}](https://tex.z-dn.net/?f=n%20%3D%20%20%5Cfrac%7B15.0%20g%7D%7B174.259g%2Fmol%7D%20)
![n = 0.0860](https://tex.z-dn.net/?f=n%20%3D%200.0860)
moles
hope this helps!