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dmitriy555 [2]
3 years ago
10

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?

Chemistry
1 answer:
Alenkinab [10]3 years ago
4 0

Answer:

3.0 moles.

Explanation:

  • It is a stichiometry problem.
  • The chemical reaction of reacting hydrogen with oxygen to produce water is:

<em>H₂ + 1/2 O₂ → H₂O.</em>

  • It is clear that <em><u>1.0 mole of H₂</u></em> reacts with 0.5 mole of O₂ to produce <u><em>1.0 mole of  water</em></u>.
  • The ratio of the reacting hydrogen to the produced water is 1:1.

∴ The number of moles of water created from reacting 3.0 moles of hydrogen completely with excess oxygen = 3.0 moles.

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The compound adrenaline contains 56.79% c, 6.56% h, 28.37% o, and 8.28% n by mass. what is the empirical formula for adrenaline?
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To determine the empirical formula of the compound given, we need to determine the ratio of each element in the compound. To do that we assume to have 100 grams sample of the compound with the given composition. Then, we calculate for the number of moles of each element. We do as follows:<span>
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C       56.79        4.73
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Dividing the number of moles of each element with the smallest value, we will have the empirical formula:

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C       4.73     / 0.59       8
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O       1.77     / 0.59       3
N        0.59    / 0.59       1<span>
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The empirical formula would be C8H11O3N.</span>
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Symbol  "X" represents Nitrogen, phosphorus, and arsenic.as they have five valence electrons in their valance shell.

<h3>What is a Lewis notation?</h3>

A Lewis form is a completely simplified illustration of the valence shell electrons in a molecule. it's miles used to expose how the electrons are organized round man or woman atoms in a molecule. Electrons are proven as dots or for bonding electrons as a line between the 2 atoms.

Lewis systems, also known as electron-dot structures or electron-dot diagrams, are diagrams that show the bonding between atoms of a molecule, and the lone pairs of electrons that can exist within the molecule.A Lewis form is based totally at the idea of the octet rule, wherein atoms percentage electrons in order that every atom has 8 electrons in its outer shell. for example, an oxygen atom has six electrons in its outer shell.

Learn more about valence electrons :-brainly.com/question/371590

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