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Furkat [3]
3 years ago
8

What is The temperature at which a substance changes from a liquid to a gas

Chemistry
2 answers:
Rainbow [258]3 years ago
6 0
The melting point for ice is at 32 degrees <span>Fahrenheit or O degrees Celsius.</span>
Zielflug [23.3K]3 years ago
3 0
In terms of what it is called, this refers to the boiling point. It is at this temperature does the liquid phase change occur to gas.
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Vapor obtained by evaporating 0.495 grams of an unknown liquid is collected in a 127 mL flask. At 371 K, the pressure of the vap
lidiya [134]

Answer:

The molar mass in g/mol is 121.4 g/m

Explanation:

Let's apply the Ideal Gases Law to solve this:

P . V = n . R. T

V = 125 mL → 0.125L

P = 754 Torr

760 Torr ___ 1 atm

754 Torr ____ (754 / 760) = 0.992 atm

Moles = Mass / Molar mass

0.992 atm . 0.125L = (0.495 g / MM) . 0.082 . 371K

(0.992 atm . 0.125L) / (0.082 . 371K) = (0.495 g / MM)

4.07x10⁻³ mol = 0.495 g / MM

MM = 0.495 g / 4.07x10⁻³ mol → 121.4 g/m

3 0
3 years ago
Warm air holds _____.
almond37 [142]
Air has mass and density, and. cold air is denser than warm air.
The same amount of water as oil air
7 0
2 years ago
Assuming that all infrared vibrations are active, what is
777dan777 [17]

Answer:

The number of lines possible for SO2 is 3

Explanation:

The following Procedure should be followed when calculating the number of vibrational modes:-

  1. Identify if the given molecule is either linear or non-linear
  2. Calculate the number of atoms present in your molecule
  3. Place the value of n in the formula and solve.

SO2 is a non-linear molecule because it contains a lone pair which causes the molecule to bent in shape hence, The mathematical formula for calculating the number of non-linear molecule in a infrared region is (3n - 6) here n is the number of atoms in molecule.

hence for Sulphur Dioxide (SO2), n will be 3

<u> Therefore, The number of lines possible for SO2 is  (3*3) - 6 = 3</u>

7 0
3 years ago
Which type of radioactive emission has a positive charge and weak penetrating power?
Wewaii [24]
1. alpha particle
alpha particles are positively charged helium nuclei with weak penetrating power
5 0
3 years ago
Question 3 of 10
lions [1.4K]

Answer: The answer is C. The reaction system absorbs 22 kJ of energy from the surroundings.

Explanation: I just took the quiz and it said I got it right.

6 0
3 years ago
Read 2 more answers
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