Answer:
134.8 mmHg is the vapor pressure for solution
Explanation:
We must apply the colligative property of lowering vapor pressure, which formula is: P° - P' = P° . Xm
P° → Vapor pressure of pure solvent
P' → Vapor pressure of solution
Xm → Mole fraction for solute
Let's determine the moles of solute and solvent
17.5 g . 1 mol/180 g = 0.0972 moles
82 g . 1mol / 32 g = 2.56 moles
Total moles → moles of solute + moles of solvent → 2.56 + 0.0972 = 2.6572 moles
Xm → moles of solute / total moles = 0.0972 / 2.6572 = 0.0365
We replace the data in the formula
140 mmHg - P' = 140 mmHg . 0.0365
P' = - (140 mmHg . 0.0365 - 140mmHg)
P' = 134.8 mmHg
Answer:
Methanol and butanol are alcohols. Alcohols have the same_______________ as alkanes and the __________ identifies the compound as an alcohol.
Explanation:
Alcohols belong to a group of organic compounds which contain -OH group as the functional group.
So alcohols have the same carbon -hydrogen bonds as alkanes and the -OH functional group identifies the compound as an alcohol.
2 Corsls provide treatments
Answer:
Any terrestrial planet has highest temperature at its core and least temperature at its crust.
HOPE THIS HELPS! <3
Explanation:
Considering the composition of earth, there are three main layers whose composition and temperature. Here as follows-
<em>a) Inner Core – The inner core is made up of iron and nickel and has a temperature of 7200 degree Celsius.
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<em>b) Molten Outer core – It is also made up of iron and nickel and has a temperature of 4300 degree Celsius.
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<em>c) Inner mantle – It is semi rigid and made up of silicon, oxygen, magnesium, iron, aluminum, and calcium and has a temperature of 3700 degree Celsius
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<em>d) Crust – It is made up of water, basalt and granite and has a temperature of 0 degree Celsius
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Looking at the composition and the temperature of the different layers, it shows that any terrestrial planet has highest temp in the core and the least at its crust!
Generally bonds present between molecules are called intermolecular forces. they are three types:
1) Wander Wall forces (London forces)
2) Dipole - dipole interaction.
3) Hydrogen bond.
- As molecular weight increases boiling point also increases due to surface are is directly proportional to Wander Waal forces.
- Dipole-dipole attraction: the attraction between two different polarizable molecules is called dipole- dipole attraction, this attraction play important role in boiling point.
- Hydrogen bond: electrostatic attraction between hydrogen and more electronegative atom is called hydrogen bond.
- The substance which has hydrogen bond have higher boiling point.
1-pentanol has hydrogen bond
1- Bromopentane has dipole - dipole
1-pentene has only London forces
Hydrogen bond > dipole - dipole attraction > London force