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tankabanditka [31]
3 years ago
14

How many moles of methane (CH4) is 6.70 x 1022 atoms of methane?

Chemistry
1 answer:
suter [353]3 years ago
8 0

Answer:

0.1113  mol

Explanation:

Data Given:

no. of atoms of CH₄= 6.70 x 10²² atoms

no. of moles of methane (CH₄) = ?

Solution:

we will find no. of moles of methane (CH₄)

Formula used

          no. of moles = no. of atoms / Avogadro's number

Where

Avogadro's number = 6.022 x 10²³

Put values in above equation

         no. of moles = 6.70 x 10²² atoms / 6.022 x 10²³ (atoms/mol)

         no. of moles = 0.1113  mol

So,

There are 0.1113 moles of methane.

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You want to know how many moles of gas your lungs can hold. You start off with a balloon that has 1.4 moles of gas and occupies
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Number of moles : n₂ = 1.775 moles

<h3>Further explanation</h3>

Given

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Required

Moles-n₂

Solution

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The ratio of gas volume will be equal to the ratio of gas moles

\tt \dfrac{V_1}{V_2}=\dfrac{n_1}{n_2}

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n₂ = (V₂ x n₁)/V₁

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What is the wavelength of a photon with an energy of 3.50 x 10^-19 J ?
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Answer:

λ = 5.68×10⁻⁷ m

Explanation:

Given data:

Energy of photon = 3.50 ×10⁻¹⁹ J

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E = hc/λ

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Now we will put the values in formula.

3.50 ×10⁻¹⁹ J =  6.63×10⁻³⁴ Js × 3×10⁸ m/s/ λ

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λ = 5.68×10⁻⁷ m

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