Answer:
when the solution is heated and reaches its saturation point thus starts forming crystals thus crystals starts forming hence crystallisation takes place
Quantitative data is any data you receive with a numerical value. So you can measure how many inches with a ruler or pounds with a scale.
This all you need?
The molecular mass of pyrene is 204.4 g/mol.
From;
ΔT = Kb m i
Where;
- ΔT = boiling point elevation
- Kb = boiling point constant
- m = molality
- i = Van't Hoff factor
Since the compound is molecular; i = 1
The number of moles of pyrene = 4.04 g/MM
Where; MM = molar mass of pyrene
molality = number of moles of pyrene/mass of solvent in Kg
The mass of solvent = 10 g or 0.01 Kg
molality = 4.04 g/MM/0.01
ΔT = Boiling point of solution - Boiling point of pure solvent
ΔT = 85.1°C - 80.1°C
ΔT = 5°C
5 = 2.53 × 4.04 g/MM/0.01 × 1
5 = 10.22 × 1/0.01 MM
0.05MM = 10.22
MM= 10.22/0.05
MM= 204.4 g/mol
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Answer:
0.4675 atm, 355.3 mmHg
Explanation:
Given:
Pressure = 355.3 torr
The conversion of P(torr) to P(atm) is shown below:
So,
Pressure = 355.3 / 760 atm = 0.4675 atm
The conversion of P(torr) to P(mmHg) is shown below:
So,
Pressure = 355.3 mmHg
Answer:
2069.85°C
Explanation:
0 K − 273.15 = -273.1 °C
Then,
234 K − 273.15 = 2069.85 °C
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