<u>Answer:</u> The vapor pressure of the solution is 43.55 mmHg
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
.....(1)
Given mass of water = 35.0 g
Molar mass of water = 18 g/mol
Putting values in equation 1, we get:

- <u>For ethyl alcohol:</u>
Given mass of ethyl alcohol = 100.0 g
Molar mass of ethyl alcohol = 46 g/mol
Putting values in equation 1, we get:

Total moles of solution = [1.944 = 2.174] moles = 4.118 moles
- Mole fraction of a substance is given by:

<u>For water:</u>


<u>For ethyl alcohol:</u>


Dalton's law of partial pressure states that the total pressure of the system is equal to the sum of partial pressure of each component present in it.
To calculate the vapor pressure of the solution, we use the law given by Dalton, which is:

Or,

We are given:
Vapor pressure of water = 23.8 mmHg
Vapor pressure of ethyl alcohol = 61.2 mmHg
Putting values in above equation, we get:
![p_T=[(23.8\times 0.472)+(61.2\times 0.528)]\\\\p_T=43.55mmHg](https://tex.z-dn.net/?f=p_T%3D%5B%2823.8%5Ctimes%200.472%29%2B%2861.2%5Ctimes%200.528%29%5D%5C%5C%5C%5Cp_T%3D43.55mmHg)
Hence, the vapor pressure of the solution is 43.55 mmHg
A planetary surface is where the solid (or liquid) material of the outer crust on certain types of astronomical objects contacts the atmosphere or outer space. Planetary surfaces are found on solid objects of planetary mass, including terrestrial planets (including Earth), dwarf planets, natural satellites, planetesimals and many other small Solar System bodies (SSSBs).[1][2][3] The study of planetary surfaces is a field of planetary geology known as surface geology, but also a focus of a number of fields including planetary cartography, topography, geomorphology, atmospheric sciences, and astronomy. Land (or ground) is the term given to non-liquid planetary surfaces. The term landing is used to describe the collision of an object with a planetary surface and is usually at a velocity in which the object can remain intact and remain attached.
In differentiated bodies, the surface is where the crust meets the planetary boundary layer. Anything below this is regarded as being sub-surface or sub-marine. Most bodies more massive than super-Earths, including stars and gas giants, as well as smaller gas dwarfs, transition contiguously between phases, including gas, liquid, and solid. As such, they are generally regarded as lacking surfaces.
Planetary surfaces and surface life are of particular interest to humans as it is the primary habitat of the species, which has evolved to move over land and breathe air. Human space exploration and space colonization therefore focuses heavily on them. Humans have only directly explored the surface of Earth and the Moon. The vast distances and complexities of space makes direct exploration of even near-Earth objects dangerous and expensive. As such, all other exploration has been indirect via space probes.
Indirect observations by flyby or orbit currently provide insufficient information to confirm the composition and properties of planetary surfaces. Much of what is known is from the use of techniques such as astronomical spectroscopy and sample return. Lander spacecraft have explored the surfaces of planets Mars and Venus. Mars is the only other planet to have had its surface explored by a mobile surface probe (rover). Titan is the only non-planetary object of planetary mass to have been explored by lander. Landers have explored several smaller bodies including 433 Eros (2001), 25143 Itokawa (2005), Tempel 1 (2005), 67P/Churyumov–Gerasimenko (2014), 162173 Ryugu (2018) and 101955 Bennu (2020). Surface samples have been collected from the Moon (returned 1969), 25143 Itokawa (returned 2010), 162173 Ryugu and 101955 Bennu.
Answer:
Phase C - Liquid State
Phase E - Gaseous State
Explanation:
Usually, in phases of water, we have the following;
When temperature is less than zero, it is said to be in its solid phase as ice.
When temperature is between 0 to 100, we can say it is in the liquid phase as water.
When temperature is above 100°C, It is said to be in the gaseous phase as vapour.
From the diagram;
Phase C is the only liquid state because it falls between temperature of 0°C and 100°
Also, only phase E is in the gaseous phase because the temperature is above 100°C.
Answer:
hope its help you
Explanation:
2.600 × 10^-5 × 6.100 × 10^-5 = 1.586 × 10-9