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Ghella [55]
3 years ago
6

Which phrase correctly describes the particles that make up water vapor?

Chemistry
1 answer:
Alexxx [7]3 years ago
7 0

Answer:

i believe its A but im not sure

its the only one that makes any sense

plz mark  brainliest

\

Explanation:

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Calculate the mass of ethylene glycol (C2H6O2) that must be added to 1.00 kg of ethanol (C2H5OH) to reduce its vapor pressure by
Diano4ka-milaya [45]

Answer:

183.7 g of ethylene glycol

Explanation:

This a case of colligative property, about vapour pressure lowering.

ΔPv = P° . Xst

ΔPv = 12 Torr

P° = Vapour pressure of pure solvent → 100 Torr

12  Torr = 100 Torr . Xst

12 Torr / 100 Torr = 0.12 → Xst

Xst is mole fraction for solute which means moles of solute / Total moles and, the total moles are the sum of moles of solvent + moles of solute.

We can make this equation:

Moles of solute / (Moles of solute + Moles of solvent) = 0.12

We don't know the moles of solute, but we do know the moles of solvent by the mass.

Mass / Molar mass = Mol

1000 g / 46 g/m = 21.7 moles

Moles of solute / Moles of solute + 21.7 moles = 0.12

Moles of solute = 0.12 ( Moles of solute + 21.7 moles)

Moles of solute - 0.12 moles of solute = 2.60  moles

0.88 moles of solute = 2.60 moles

Moles of solute = 2.60 moles / 0.88 → 2.96 moles of solute

Mol . molar mass = Mass

2.96 m  .  62g/m = 183.7 g

4 0
3 years ago
Why are being flammable and combustible considered to be chemical properties and not physical properties?
g100num [7]

Answer:

C. They change the substance into another substance.

Explanation:

Hope it helps!!

6 0
2 years ago
Which states that the volume of a gas is proportional to the moles of the gas when pressure and temperature are
AveGali [126]
Avocados can be a healthy source of nutrients
8 0
3 years ago
State the periodic table
kogti [31]

Answer:

Heres a picture of the periodic table.

Explanation:

Source(s):Science News for Students

5 0
3 years ago
Why are protons in an atom so important? Question 5 options: A. Protons determine the atoms' identity (type of element) and wher
Gennadij [26K]

Your answer is A my friend as the atomic number of an atom is determined by the number of protons

4 0
2 years ago
Read 2 more answers
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