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lubasha [3.4K]
2 years ago
5

C + 2H2 -> CH4

Chemistry
2 answers:
Pavel [41]2 years ago
6 0

Moles of methane

  • Given mass/Molar Mass
  • 32/16
  • 2mol

2moles hydrogen required for 1 mol CH_4 production

For 2 mol CH_4

Moles of H_2=2(2)=4

Option C

ankoles [38]2 years ago
4 0

Answer:

<u>C) 4</u>

Explanation:

<u>The reaction</u> :

  • C (s) + 2H₂ (g) ⇒ CH₄ (g)

       12g      4g             16g

Hence, based on this we can say that : <u>2 moles of hydrogen gas are needed to produce 16g of methane.</u>

<u />

<u>For 32g of methane</u>

  • Number of moles of H₂ = 32/16 × 2
  • Number of moles of H₂ = <u>4</u>
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A compound's empirical formula tells you what the smallest whole number ratio between the atoms that make up that compound is.

I think of the empirical formula as a building block for molecules. A compound's molecular formula will depend on how many building blocks are needed to build a molecule of a given substance.

In your example, you know that the empirical formula of the compound is

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This tells you that the minimum ratio between nitrogen atoms and oxygen atoms is

1

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molecular formula

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You also know that the molar mass of your compound is

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So, how would you determine how many building blocks you need? Well, start by figuring out the molar mass of one building block, i.e. the molar mass of the empirical formula.

Since it contains one nitrogen atom and two oxygen atoms, you will get

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7 0
2 years ago
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Answer:

Explanation:

3.

Knowns: 100mL of solution; concentration of 0.7M

Unknown: number of moles

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Final Answer: 0.07mole

2.

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Answer:

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