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expeople1 [14]
3 years ago
6

What factors affect freezing-point depression of a solution? (select all that apply)

Chemistry
1 answer:
ANTONII [103]3 years ago
8 0

Answer:

A and F i think

Explanation:

Freezing point depression is a colligative property observed in solutions that results from the introduction of solute molecules to a solvent. The freezing points of solutions are all lower than that of the pure solvent and is directly proportional to the molality of the solute

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A decentralized system of crime laboratories currently exists in the United States under the auspices of various governmental ag
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Answer:

Federal, State, Municipal and County

Explanation:

A decentralized system of crime laboratories currently exists in the United States under the auspices of various governmental agencies at the federal, state, municipal and county levels of government.

8 0
3 years ago
Circle which of the following depend on the amount of matter present:
yan [13]
It is the boilimg point now aa
4 0
3 years ago
[15 Points, Stoichiometry and Gases]
KiRa [710]

The reaction is

CaC₂(s) + 2H₂O (l) -----> Ca(OH)₂ (s) + C₂H₂ (g) ​

As we have data of gas ethyne (or acetylene), C₂H₂

We can calculate the moles of acetylene and from this we can estimate the mass of calcium carbide taken

the moles of acetylene will be calculated using ideal gas equation

PV =nRT

R = gas constant = 0.0821 Latm/molK

T = 385 K

V = volume = 550 L

P = Pressure = 1.25 atm

n = moles = ?

n = PV /RT = 1.25 X 550 / 0.0821 X 385 = 21.75 mol

As per balanced equation these moles of acetylene will be obtained from same moles of calcium carbide

moles of calcium carbide = 21.75mol

molar mass of CaC₂ = 40 + 24 = 64

mass of CaC₂ = moles X molar mass = 21.75 X 64 = 1392g

6 0
3 years ago
Read 2 more answers
___________ is a characteristic of a substance that's observed during a chemical reaction. *
Tju [1.3M]
Chemical property. Chemical property refers to the characteristic changed
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2 years ago
How many liters of 4M solution can be made using 100 grams of lithium bromide
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You can make 0.288 L of 4M solution using 100g of lithium bromide
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