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Delvig [45]
3 years ago
11

The laboratory process of distillation does not involve

Chemistry
2 answers:
Fiesta28 [93]3 years ago
7 0
Liquids with the same boiling points because they will evaporate at the same time leaving you without a solution.
riadik2000 [5.3K]3 years ago
5 0
C liquids with different boiling points, to distill you only use one liquid

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Grignard reactions are usually performed in ether solvent. Which statement below does not identify a safety concern associated w
nikdorinn [45]

Answer: A.  Diethyl ether has a very low miscibility in wate

The fact that the diethyl ether is miscible or not in water <u>does not imply a ris</u>k for the person who is working with this reagent in the laboratory.

However, the fact that diethyl ether forms explosive peroxides and that it is highly flammable implies that there is a risk of explosion when exposed to air and sunlight. On the other hand, as option C mentions, if a person inhales a large quantity of this reagent, they may lose consciousness and suffer some injury when fainting, due to the powerful anesthetic effect of this reagent.<u> In conclusion, options B, C and D are statements that imply safety problems associated with the use of diethyl ether in the laboratory, while option A does not imply it.</u>

6 0
3 years ago
A balloon was partially filled with helium gas at room temperature. It occupied 4.0 liters of volume at 700.0 mmHg atmospheric p
Tatiana [17]

Answer:

28.28 L.

Explanation:

  • We can use the general law of ideal gas: <em>PV = nRT.</em>

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.

  • If n and T are constant, and have two different values of V and P:

<em>P₁V₁ = P₂V₂</em>

<em></em>

P₁ = 700.0 mm Hg, V₁ = 4.0 L.

at burst: P₂ = 99.0 mm Hg, V₂ = ??? L.

<em>∴ V₂ = P₁V₁/P₂</em> = (700.0 mm Hg)(4.0 L)/(99.0 mm Hg) = <em>28.28 L.</em>

3 0
3 years ago
What volume does 8.5 g NH₃ occupy at STP?
vesna_86 [32]
First, convert grams to moles by dividing 8.5 by the molar mass of NH₃ (N=14,H=1)
14+1+1+1=17
8.5/17=.5 moles NH₃
Multiply .5 by the conversion factor of moles to L (22.4)
.5*22.4=11.2 L NH₃
11.2 is just 11.21 rounded down, so your answer is C) 11.21 L
5 0
3 years ago
Round to 4 significant figures. <br> 0.007062
Monica [59]
.0071 you round 0 to1 because the 6 is bigger than 5 and if anything is bigger than five you round up that last number
7 0
3 years ago
If a solute has really strong bonds between its particles, would you expect it to form a solution that gets hold or cold? Explai
Kobotan [32]

Answer:

The temperature of the solute/solvent without any external effect would decrease.

Explanation:

As the bonding between the solute particles is really strong, therefore a large amount of energy is required to overcome these forces. So that the new bonding between the solute and solvent is created.

In order to achieve this, there will be a lot of energy required and that is through the heating process. So the solution will require energy so the solute will dissolve fully either by provision of external force i.e stirring or by heating.

Explanation:

8 0
2 years ago
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