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3 years ago

Oxygen is a gas at room temperature, while water is a liquid. Use intermolecular forces to explain the difference in state.

Chemistry

1 answer:

Korvikt [17]3 years ago

8 0

Answer:

Water has stronger attractions (dipole-dipole)

Explanation:

Oxygen gas has a double bond and has dipole moments that cancel out, as both oxygens evidently have similar electronegativities. Therefore, oxygen only has London-dispersion forces and is nonpolar.

Water is polar and therefore has dipole-dipole attractions in addition to London-dispersion forces and as both the H2O and the O2 have similar electron tendencies (mostly due to O being prevalent in both), the London-dispersion forces don't differ by much. But since water has those dipole-dipole attractions, water has a higher boiling point than oxygen gas

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Four substances, HCl(g), I2(s), HI(g), and Cl2(g), are mixed in a reaction vessel and allowed to reach equilibrium in the reacti

salantis [7]

Answer:

B. X and Y only

Explanation:

Hello,

In this case, by considering the Le Chatelier's principle, if we desire an increase in the hydrogen iodide amount, based on the given reaction, two procedures are needed:

- Add HCl(g) to the reaction vessel: because the addition of a reagent shifts the reaction rightwards.

- Add I2(s) to the reaction vessel: by cause of the same aforesaid reason.

Therefore, the answer is: B. X and Y only.

Z statement is not true since the change in the mole number for the reaction is zero (2+1-2-1=0) considering each species' stoichiometric coefficients.

Best regards.

4 0

4 years ago

If Maria winks exactly 5 times every minute while she is awake and she sleeps exactly 8 hours a day, how many times does Maria w

irina1246 [14]

24 minus 8 is 16
5 times 60 is 300
300 times 16 is 4800.
She winks 4800 times a day

5 0

3 years ago

The solubility of CO2 in water is 0.161 g/100 mL at 20oC and a partial pressure of CO2 of 760 mmHg. What partial pressure of CO2

Schach [20]

<u>Answer:</u> The partial pressure of carbon dioxide having solubility 0.886g/100mL is 4182.4 mmHg

<u>Explanation:</u>

Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.

The equation given by Henry's law is:

$C_{CO_2}=K_H\times p_{CO_2}$ ......(1)

where,

$C_{CO_2$ = solubility of carbon dioxide in water = 0.161 g/100 mL

$K_H$ = Henry's constant = ?

$p_{CO_2}$ = partial pressure of carbon dioxide = 760 mmHg

Putting values in equation 1, we get:

$760mmHg=K_H\times 0.161g/100mL\\\\K_H=\frac{760mmHg}{0.161g/100mL}=4720.5g.mmHg/100mL$

Now, calculating the pressure of carbon dioxide using equation 1, we get:

$C_{CO_2$ = solubility of carbon dioxide in water = 0.886 g/100 mL

$K_H$ = Henry's constant = 4720.5 g.mmHg/100 mL

$p_{CO_2}$ = partial pressure of carbon dioxide = ?

Putting values in equation 1, we get:

$p_{CO_2}=4720.5g.mmHg/100mL\times 0.886g/100mL=4182.4mmHg$

Hence, the partial pressure of carbon dioxide having solubility 0.886g/100mL is 4182.4 mmHg

4 0

4 years ago

The ability to conduct electricity in the solid state is a characteristic of metallic bonding. This characteristic is best expla

satela [25.4K]

Answer:

Explanation:

The presence of mobile electrons explains the reason why there is conduction of electricity in the solid state. Electrons are the part of atoms that are majorly responsible for the different characteristics that substances exhibit.

A good example of the conduction of electricity can be seen in the case of 2 crystalline forms of carbon. While one of the allotropes could conduct electricity, the other allotrope cannot conduct electricity.

The two allotropes we are talking about here is graphite and diamond. While graphite could be used in a whole lot of electrolysis set up as an electrode, diamond does not found use in cases like this despite its crystalline structure. The reason for this is simple.

While diamond does not contain free mobile electron in its molecule, these free mobile electrons are present in a molecule of graphite. These free mobile electrons are the main reason why graphite can conduct electricity and diamond cannot even though they are both crystalline forms of carbon.

4 0

4 years ago

Are Sharks Color Blind?

melisa1 [442]

Answer:

Sharks are color blind, which means they cannot see a lot of colors clearly, but this does not stop them from hunting their prey as they have many tricks up their sleeves. Coming up in this article, we look at what colors sharks are least attracted to, if whale sharks are blind, and if sharks are blind when they attack.

Explanation:

5 0

3 years ago