All categories

4 years ago

Which substance would most likely need to cool to the lowest temperature before it condenses?

Chemistry

2 answers:

lutik1710 [3]4 years ago

6 0

Answer:

B. ethane

Explanation:

just took it on edge :)

lozanna [386]4 years ago

3 0

b. ethane (C2H6), a nonpolar covalent compound

Explanation:

The substance that would most likely need to cool to the lowest temperature before it condenses is ethane, a non-polar covalent compound.

Ethane in liquid form has very weak attractive forces binding the molecules together.

To form and change state, all the molecules must be brought very close together under very high pressure and low temperature. Else, they will not attract one another.

Ionic crystal lattice forces as seen in KBr are strong attractive forces. As a substance such as KBr begins to condense, they begin to attract one another with a very strong force even before they cool to their least temperature.
Ammonia has strong intermolecular hydrogen bonds in its structure which binds them together. The attraction is great between the hydrogen of one molecule and the nitrogen of another.
In ethane we have a weak attraction.

learn more:

Intermolecular forces brainly.com/question/10107765

#learnwithBrainly

You might be interested in

A chemist added an excess of sodium sulfate to a solution of a soluble barium compound to precipitate all of the barium ion as b

AnnyKZ [126]

Answer : The mass percentage of barium in the compound is, 53.8 %

Explanation : Given,

Mass of barium compound = 441 mg

Mass of barium sulfate = 403 mg = 0.403 g (1 mg = 0.001 g)

The balanced chemical reaction will be:

$Ba^{2+}(aq)+Na_2SO_4(aq)\rightarrow BaSO_4(s)+2Na^+(aq)$

First we have to calculate the moles of $BaSO_4$

$\text{Moles of }BaSO_4=\frac{\text{Mass of }BaSO_4}{\text{Molar mass of }BaSO_4}$

Molar mass of $BaSO_4$ = 233.38 g/mole

$\text{Moles of }BaSO_4=\frac{0.403g}{233.38g/mole}=0.001727mole$

Now we have to calculate the moles of barium ion.

From the balanced chemical reaction, we conclude that

As, 1 mole of barium sulfate produced from 1 mole of barium ion

So, 0.001727 mole of barium sulfate produced from 0.001727 mole of barium ion

Now we have to calculate the mass of barium ion.

$\text{ Mass of }Ba^{2+}=\text{ Moles of }Ba^{2+}\times \text{ Molar mass of }Ba^{2+}$

Molar mass of barium = 137.3 g/mol

$\text{ Mass of }Ba^{2+}=(0.001727moles)\times (137.3g/mole)=0.2371g$

Now we convert the mass of barium ion from gram to mg.

Conversion used : (1 g = 1000 mg)

Mass of barium ion = 0.2371 g = 237.1 mg

Now we have to calculate the mass percentage of barium in the compound.

Mass percent of barium = $\frac{237.1mg}{441mg}\times 100=53.8\%$

Thus, the mass percentage of barium in the compound is, 53.8 %

8 0

4 years ago

What is another name for the acid dissociation constant?

sveticcg [70]

A. Ionization constant

4 0

3 years ago

Read 2 more answers

Which statement describes a major drawback of the Bohr model that caused scientists to replace it?

Kay [80]

Answer:

C.it contradicted the heinsberg uncertainly principle

6 0

3 years ago

Read 2 more answers

Based on this chart, which of the following statements describes sources of

Vera_Pavlovna [14]

Answer:A is correct

Explanation:

4 0

3 years ago

Read 2 more answers

Why was methyl red used as an indicator in this experiment rather than phenolphthalein?

wolverine [178]

Methyl Red, also called C.I. Acid Red 2, is an indicator dye that turns red in acidic solutions.
Phenolphthalein is a sensitive chemical with the formula C20H14O4 (often written as "HIn" in chemistry shorthand notation). Often used in titrations, it turns from colorless in acidic solutions to pink in basic solutions. If the concentration of indicator is particularly strong, it can appear purple. A phenolphtalein turns a bright orange color, in a solution containing a ph below 0.

8 0

4 years ago