A crystal structure is a unique arrangement of atoms, ions or molecules in a crystalline liquid or solid. It describes a highly ordered structure, occurring due to the intrinsic nature of its constituents to form symmetric patterns.
Answer:
P = 2.92 atm
Explanation:
With the three assumptions in mind, the system consists of:
- A liquid phase containing n-hexane and n-heptane, and
- A gaseous phase containing n-hexane vapor, n-heptane vapor, and nitrogen gas.
First we use PV=nRT to calculate the moles of n-hexane and n-heptane in the gaseous phase:
P = 0.199 MPa ⇒ 0.199 * 1.869 = 1.964 atm
- 1.964 atm * 648 L = n * 0.082 atm·L·mol⁻¹·K⁻¹ * 365 K
P = 0.083 MPa ⇒ 0.083 * 1.869 = 0.155 atm
- 0.155 atm * 648 L = n * 0.082 atm·L·mol⁻¹·K⁻¹ * 365 K
So <u>the gaseous phase consists of 42.52 moles of n-hexane, 3.358 moles of n-heptane, and 14 mol of nitrogen</u>.
For the liquid phase, we <u>calculate the remaining moles of n-hexane and n-heptane</u>. Then we<u> convert to liters</u>, using their molar volumes:
- n = 112 mol - 42.52 mol = 69.48 mol
- 69.48 mol * 0.146 L/mol = 10.14 L
- n = 155 mol - 3.358 mol = 151.642 mol
- 151.642 mol * 0.162 L/mol = 24.57 L
So the liquid phase occupies (10.14+24.57) = 34.71 L, and <u>contains 69.48 mol of n-hexane and 151.64 mol of n-heptane</u>.
Finally, to<u> calculate the pressure in the vessel</u>, we use PV=nRT:
P = ?
V = 648 - 34.71 = 613.29 L
n = 42.52 mol hexane + 3.35 mol heptane + 14 mol nitrogen = 59.87 mol
T = 365 K
- P * 613.29 L = 59.87 mol * 0.082 atm·L·mol⁻¹·K⁻¹ * 365 K
Answer:
Can I get my 50 points now?
Explanation:
The helium is formed during the natural radioactive decay of elements such as uranium and thorium. These heavy elements were formed before the earth but they are not stable and very slowly, they decay. One mode of decay for uranium is to emit an alpha-particle.
The tire pressure is the sum of gauge pressure and the standard pressure of atmospheric pressure
We know that the standard air pressure of surrounding = 101.325 kPa
The given gauge pressure = 413 kPascal
So the tire pressure = 101.325 kPa + 413 = 514.325 K Pa
We can also convert the given pascals to atmosphere or Torr or mmHg or bar
The are made from star stuffs...
Galaxies are composed of stars, dust, and dark matter, all held together by gravity. Below we discuss galaxy formation, galactic collisions and other facts about these so-called “island universes.” The Milky Way Galaxy is organized into spiral arms of giant stars that illuminate interstellar gas and dust.
Hope that helps........ (◕‿◕✿)
