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3 years ago

Determine the volume at STP of 36.8 g of nitrogen dioxide (NO2)

Chemistry

1 answer:

alexandr1967 [171]3 years ago

6 0

17.92L

Explanation:

Given parameters:

Mass of NO₂ = 36.8g

Condition = STP

Unknown:

Volume of gas = ?

Solution:

The volume of gas can be determined at STP if the number of moles of that gas is known.

Volume of NO₂ at STP = number of moles x 22.4

Number of moles = $\frac{mass}{molar mass}$

Molar mass of NO₂ = 14 + 2(16) = 46g/mol

Number of moles = $\frac{36.8}{46}$ = 0.8mole

Now;

Volume of NO₂ = 0.8 x 22.4 = 17.92L

learn more:

STP brainly.com/question/7795301

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Is Sucrose a ionic or covalent bond

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Answer:

covalent bond

Explanation:

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2 years ago

KMnO4 + KCI + H2SO4<br>MnSO4 + K2S04+ Cl₂ + H₂O

yKpoI14uk [10]

Answer:

Balancing the equation

2KMnO₂+10KCl+8H₂SO₄⇒2MnSO₄+6K₂SO₄+8H₂O+5Cl₂

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2 years ago

Here's the question ~

Lelechka [254]

Using the Rydberg formula, the spectral line of H - atom is suitable for this purpose is Paschen, ∞ → 3.

Using the Rydberg formula;

1/λ = RH(1/nf^2 - 1/ni^2)

Given that;

λ = wavelength

RH = Rydberg constant

nf = final state

ni = initial state

When final state = 3 and initial state = ∞

Then;

1/λ = 1 × 10^7 m-1 (1/3^2 - 1/ ∞^2)

1/λ = 1 × 10^7 m-1 (1/3^2 )

λ = 900 nm

Hence, the correct answer is Paschen, ∞ → 3

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2 years ago

Read 2 more answers

1. 17.0 grams of xenon hexafluoride is in a solid container. How many milliliters of that gas

BlackZzzverrR [31]

Answer: The volume of gas is 3020 ml

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = 821.4 torr = 1.08 atm (760 torr = 1atm)

V = Volume of gas in L = ?

n = number of moles = $\frac{\text {given mass}}{\text {Molar mass}}=\frac{17.0g}{245.28g/mol}=0.069mol$

R = gas constant = $0.0821Latm/Kmol$

T =temperature = $302.7^0C=(302.7+273)K=575.7K$

$V=\frac{nRT}{P}$

$V=\frac{0.069mol\times 0.0821Latm/K mol\times 575.7K}{1.08atm}=3.02L=3020ml$

Thus volume of gas is 3020 ml

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2 years ago

What is penetration? How is it related to shielding? Use the penetration effect to explain the difference in relative orbital en

Whitepunk [10]

Answer: penetration is the ability of an electron in a given orbital to approach the nucleus closely. Shielding refers to the fact that core electrons reduce the degree of nuclear attraction felt by the orbital electrons. Shielding is the opposite of penetration. The most penetrating orbital is the least screening orbital. The order of increasing shielding effect/decreasing penetration is s<p<d<f.

Explanation:

The order of penetrating power is 1s>2s>2p>3s>3p>4s>3d>4p>5s>4d>5p>6s>4f....

Since the 3p orbital is more penetrating than the 3d orbital, it will lie nearer to the nucleus and thus possess lower energy.

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2 years ago