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2 years ago

Nitrogen (N2) and hydrogen (H2) react to make NH3 according to the following

Chemistry

1 answer:

Schach [20]2 years ago

3 0

The number of moles of NH3 that could be made would be 0.5 moles

<h3>Stoichiometric reactions</h3>

From the balanced equation of the reaction:

N2 (g) + 3 H2(g) ----> 2NH3 (g)

The mole ratio of N2 to H2 is 1:3

Thus, for 0.50 moles of N2, 1.5 moles of H2 should be present. But 0.75 moles of H2 was allowed to react. Meaning that H2 is limiting in this case.

Mole ratio of H2 and NH3 = 3:2

Thus for 0.75 moles H2, the mole of NH3 that would be produced will be:

2 x 0.75/3 = 0.5 moles

More on stoichiometric calculations can be found here: brainly.com/question/8062886

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3 years ago

If a speaker is moved from 2 feet away to 4 feet away, the volume of the sound will: half double quarter stay the same

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Answer:

the volume of the sound will quarter

Explanation:

As you move far away from the source, the loudness of sound decreases. This is because as the distance from the source increases, the area it covers also increases thereby spreading the energy over a great area leading to lesser loudness and intensity.

As a result of this, sound intensity follows an inverse square law:

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3 years ago

A 30.0 L sample of nitrogen inside a rigid, metal container at 20.0 °C is placed inside an oven whose temperature is 50.0 °C. Th

Scorpion4ik [409]

Answer:

3.31 atm.

Explanation:

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∵ P α T.

∴ P₁T₂ = P₂T₁.

P₁ = 3.00 atm, T₁ = 20.0 °C + 273.15 = 293.15 K.

P₂ = ??? atm, T₂ = 50.0 °C + 273.15 = 323.15 K.

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3 years ago

Describes the three-dimensional arrangement of the atoms in a molecule states that two negatively charged particles (electrons)

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Answer:

When atoms other than hydrogen form covalent bonds, an octet is accomplished by sharing. The octet rule can be used to explain the number of covalent bonds an atom forms. This number normally equals the number of electrons that atom needs to have a total of eight electrons (an octet) in its outer shell

Explanation:

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3 years ago

The ksp of pbbr2 is 6.60×10−6 . What is the molar solubility of pbbr2 in pure water?

frez [133]

Answer:

The molar solubility is 0.0118 mole / liter = 1.18 × 10⁻² M

Explanation:

1) Ksp stands for product solubility constant.

2) The product solubility constant is the equilibrium constant used for the aqueous ionization (dissolution) of low soluble ionic compounds.

3) The ionization or equilibrium reaction for the PbBr₂ is:

PbBr₂ (s) ⇄ Pb²⁺ (aq) + 2 Br(aq)⁻

4) Sotichiometry:

PbBr₂ (s) ⇄ Pb²⁺ (aq) + 2 Br(aq)⁻

Ao - x moles x 2x

5) Calculations:

Per definition of Ksp:

Ksp = [Pb²⁺] [Br(aq)⁻]² = (x) (2x)² = 4x³

Then, you have to solve: 6.60×10⁻⁶ = 4x³

x³ = 6.60×10⁻⁶ / 4

x = 0.0118 mole / liter = 1.18 × 10⁻² M

5 0

3 years ago