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erica [24]
3 years ago
11

If I contain 3 moles of gas in a container with a volume of 60 liters and at a

Chemistry
2 answers:
viktelen [127]3 years ago
4 0

Answer:    n = 3.0 moles

V = 60.0 L

T = 400 K

From PV = nRT, you can find P

P = nRT/V = (3.0 mol)(0.0821 L-atm/K-mol)(400 K)/60.0L

P = 1.642 atm = 1.6 atm (to 2 significant figures)

azamat3 years ago
3 0

Answer:

P = 1246.4 mmHg

Explanation:

assuming ideal gas:

  • PV = RTn

∴ R = 0.082 atm.L/K.mol

∴ V = 60 L

∴ T = 400 K

∴ n gas = 3 mol

⇒ P = RTn / V

⇒ P = ((0.082 atm.L/K.mol)(400 K)(3 mol))/(60 L)

⇒ P = (1.64 atm)×(760 mmHg/atm)

⇒ P = 1246.4 mmHg

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Strike441 [17]

Answer : Option C) 0.3 mol of Gold.

Explanation : Amongst the options given in the question, 0.3 mol of Au is the greatest in mass in grams.

As 0.3 mol X atomic weight of Au (196.966) = 59.088 grams;

Silver has 0.5 mol X atomic weight of Ag (107.86) = 53.93 grams;

The other options are not relevant as they deal in the atomic range which has mass value very less as compared to the moles of elements.

Therefore, it is clear that Au has the greatest mass amongst the given choices.

8 0
4 years ago
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Why water is able to stick to the side of a glass
Snezhnost [94]

Answer:

Water uses adhesive forces that allow it to stick to certain surfaces such as glass.

Explanation:

When the angle between vertical direction and the glass wall is small, surface tension is stronger and the component of gravity perpendicular to the glass wall is small. The result of this causes water to stick to the side of a glass.

Hope this helps!

3 0
3 years ago
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Identify which of these molecules has the highest boiling point and give the reasoning why in terms of intermolecular force. CHC
PolarNik [594]

Answer:

CH3COOH

Explanation:

CH3COOH has the highest boiling point because it participates in the strongest intermolecular interactions. The -OH group can participate in hydrogen bonding with other -OH groups. Hydrogen bonds are very strong because they are the result of large partial positive charge on the hydrogen and large partial negative charge on the oxygen. When surrounded by other -OH groups, the partial positive charge on the hydrogen can form temporary bonds with the partial negative charge of an oxygen on another molecule. The stronger the intermolecular interactions, the more difficult they are to overcome, thus increasing the boiling point.

The strongest IMF the other molecules participate in are dipole-dipole. These interactions are not as strong as hydrogen bonding.

7 0
2 years ago
Why do you think that KCl can be used as an effective water softener and also as a drug to kill someone? What is the difference
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Answer: For price-sensitive customers and for customers with no sodium-related health concerns, sodium chloride is an excellent choice. It's effective, inexpensive, easily obtained and usable in any water softener. On the other hand, potassium chloride would be a better choice for other kinds of customers.

Explanation:

4 0
3 years ago
How much would the boiling point of water increase if 4 mol of sugar were added to 1 kg of water (Kb = 0.51°C/(mol/kg) for water
andre [41]

Answer : The boiling point of water increases, 2.04^oC

Solution : Given,

Moles of solute (sugar) = 4 moles

Mass of solvent (water) = 1 Kg

K_b=0.51Kg^oC/mole

i = 1 for sugar

Formula used :

\Delta T_b=i\times K_b\times m\\\Delta T_b=i\times K_b\times \frac{n_{solute}}{w_{solvent}}

Where,

\Delta T_b = elevation in boiling point

K_b = elevation constant

m = molality

n_{solute} = moles of solute (sugar)

w_{solvent} = mass of solvent (water)

i = van't Hoff factor

Now put all the given values in this formula, we get the elevation in boiling point of water.

\Delta T_b=(1)\times (0.51Kg^oC/mole)\times \frac{4moles}{1Kg}=2.046^oC

Therefore, the elevation in boiling point of water is 2.04^oC

4 0
3 years ago
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