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Dvinal [7]
3 years ago
15

How many sulfur dioxide molecules are there in 1.80 mol of sulfur dioxide

Chemistry
2 answers:
murzikaleks [220]3 years ago
8 0

Answer : The number of sulfur dioxide molecules are, 10.84\times 10^{23}

Explanation : Given,

Moles of sulfur dioxide molecules = 1.80 mole

As we know that, 1 mole of substance contains 6.022\times 10^{23} number of sulfur dioxide molecules.

Now we have to calculate the number of sulfur dioxide molecules.

As, 1 mole of sulfur dioxide contains 6.022\times 10^{23} number of sulfur dioxide molecules.

So, 1.80 mole of sulfur dioxide contains 1.80\times 6.022\times 10^{23}=10.84\times 10^{23} number of sulfur dioxide molecules.

Therefore, the number of sulfur dioxide molecules are, 10.84\times 10^{23}

netineya [11]3 years ago
4 0
<span>10.84 to the 23 power</span>
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Answer:

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3 years ago
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A vessel of volume 100ml contains 10% of oxygen and 90% of an unknown gas. The gases diffuses in 86 second through a small hole
swat32

The molecular weight of unknown gas : 23.46 g/mol

<h3>Further explanation</h3>

Given

A vessel contains 10% of oxygen and 90% of an unknown gas.

diffuses rate of mixed gas = 86 s

diffuses rate of O₂ = 75 s

Required

the molecular weight of unknown gas (M)

Solution

The molecular weight of mixed gas :(M O₂=32 g/mol)

\tt 0.1\times 32+0.9\times M=3.2+0.9M

Graham's Law :

\tt \dfrac{r_{O_2}}{r_{mixed~gas}}=\sqrt{\dfrac{M_{mixed}}{M_{O_2}} }\\\\\dfrac{75}{86}=\sqrt{\dfrac{3.2+0.9M}{32} }\\\\0.76=\dfrac{3.2+0.9M}{32}\\\\24.32=3.2+0.9M\\\\21.12=0.9M\rightarrow M=23.46~g/mol

7 0
3 years ago
a solution is made by dissolving cadmium fluoride (CdF2 Ksp =6.44×10 −3 ) in 100.0 mL of water until excess solid is present. So
Lunna [17]

Answer:

Answers are in the explanation

Explanation:

Ksp of CdF₂ is:

CdF₂(s) ⇄ Cd²⁺(aq) + 2F⁻(aq)

Ksp = 6.44x10⁻³ = [Cd²⁺] [F⁻]²

When an excess of solid is present, the solution is saturated, the molarity of Cd²⁺ is X and F⁻ 2X:

6.44x10⁻³ = [X] [2X]²

6.44x10⁻³ = 4X³

X = 0.1172M

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Ksp of LiF is:

LiF(s) ⇄ Li⁺(aq) + F⁻(aq)

Ksp = 1.84x10⁻³ = [Li⁺] [F⁻]

When an excess of solid is present, the solution is saturated, the molarity of Li⁺ and F⁻ is XX:

1.84x10⁻³ = [X] [X]

1.84x10⁻³ = X²

X = 0.0429

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7 0
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The man responsible for discovering that the atom is mostly space is: Millikan Dalton Bohr Einstein Rutherford
kodGreya [7K]

Answer: Rutherford.


Explanation:


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7 0
3 years ago
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