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3 years ago

A 100.0 ml flask contains 510.g of N2 at 0 degrees c. What is the pressure in atm, torr, psi

Chemistry

1 answer:

Fudgin [204]3 years ago

3 0

PV = nRT

We are solving for pressure. We are given the volume, which is 0.100 L (equivalent to 100 mL). The temperature is 273.15 K (equivalent to 0 Celsius). All we need to do is convert the grams to moles before we can solve for pressure.

N₂ has a molecular mass of 28.02. This means that 510 g N₂ * (1 mole N₂/28.02 g N₂) = 18.2 moles N₂

PV = nRT

P = nRT/V

R is the gas constant. R = 0.08206 atm*L/(K*mol)

P = (18.2 mol)*(0.08206 atm*L/(K*mol))*(273.15 K) / (0.100 L)

P = 4.08 *10^3 atm

The pressure is 4.08*10^3 atm.

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NISA [10]

Answer:

B: +3

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The ion will be positively charged because in this new ion, the number of electrons is lesser than the number of protons. The charge difference will impart a positive net charge on the ion.

In a neutral atom, the number of electrons and protons are the same.
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2 years ago

7. Disulfur dichloride can be made by reacting chlorine gas with molten sulfur. What is the yield of S2Cl2 expected in a laborat

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Answer:

11.4g of S₂Cl₂ is the expected yield

9.69g of S₂Cl₂ are produced with a 85% yield

Explanation:

The reaction of sulfur S₈ with Cl₂ to produce S₂Cl₂ is:

S₈ + 4Cl₂ → 4S₂Cl₂

Where 1 mole of sulfur reacts with four moles of chlorine to produce four moles of disulfur dichloride.

To find the limiting reactant you need to convert mass of each reactant to moles using its molar mass, thus:

S₈ (Molar mass: 256.52g/mol): 10.0g ₓ (1mol / 256.52g) = 0.0390 moles S₈

Cl₂ (Molar mass: 70.9g/mol): 6.00g ₓ (1mol / 70.9g) = 0.0846 moles Cl₂

For a complete reaction of 0.0390 moles of sulfur, there are necessaries:

0.0390 mol S₈ ₓ (4 mol Cl₂ / 1 mol S₈) = 0.156 moles Cl₂. As you have just 0.0846 moles of chlorine, Cl₂ is the limiting reactant.

As 4 moles of Cl₂ produce 4 moles of S₂Cl₂. 0.0846 moles of Cl₂ produce, in theory, 0.0846 moles of S₂Cl₂ (Molar mass: 135.04g/mol). In mass:

0.0846 moles S₂Cl₂ ₓ (135.04g/mol) =

<h3>11.4g of S₂Cl₂ is the expected yield</h3>

If you produce just the 85.0% of yield, mass of S₂Cl₂ is:

11.4g ₓ 85% =

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3 years ago

If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the struct

Inessa05 [86]

Answer:

The correct option is: bent 109°

Explanation:

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Given molecule: XY₂, having two lone pairs around the central atom X.

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