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Anna007 [38]
3 years ago
14

What are ionic compounds typically composed of?

Chemistry
2 answers:
Iteru [2.4K]3 years ago
6 0

Answer and explanation:

Ionic compounds are formed by elements with a considerable electronegativity difference. They are typically composed by an element of groups IA or IIA of the Periodic Table (with lower electronegativity, so it tends to lose electrons) and a other element of groups VIA or VIIA (with higher electronegativity, thus it tends to gain electrons). For example, KCl is formed by K (group IA), which loses one electron and forms the cation K⁺, and Cl (group VIIA) which gains the electron and forms the anion Cl⁻.

Mashcka [7]3 years ago
4 0

<span> </span><span>Ionic compounds are compound that contains ions held together by ionic bonds. They are made up of particles that are arranged in a repeating pattern. Ions are said to be packed in a regular crystalline structures in an arrangement with the least energy.</span>

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How many grams of H2O will be formed when 36.8 g H2 is mixed with 40.2 g O2 and allowed to completely react to form water
Artemon [7]

Answer:

45.225 grams of H₂O will be formed when 36.8 g H₂ is mixed with 40.2 g O₂

Explanation:

The balanced reaction is:

2 H₂ + O₂ → 2 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:

  • H₂: 2 moles
  • O₂: 1 mole
  • H₂O: 2 moles

Being the molar mass of the compounds:

  • H₂: 2 g/mole
  • O₂: 32 g/mole
  • H₂O: 18 g/mole

then, by reaction stoichiometry, the following amounts of reactant and product mass participate:

  • H₂: 2 moles* 2 g/mole= 4 g
  • O₂: 1 mole* 32 g/mole= 32 g
  • H₂O: 2 moles* 18 g/mole= 36 g

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

To determine the limiting reagent, it is possible to use the reaction stoichiometry of the reaction and a simple rule of three as follows: if by stoichiometry 4 g of H₂ react with 32 g of O₂, 36.8 g of H₂ with how much mass of O₂ will it react?

mass of O_{2} =\frac{36.8  grams of H_{2}*32  grams of O_{2} }{4  grams of H_{2}}

mass of O₂=294.4 grams

But 294.4 grams of O₂ are not available, 40.2 grams are available. Since you have less mass than you need to react with 36.8 grams of H₂, oxygen O₂ will be the limiting reagent.

Then you can apply the following rule of three: if by stoichiometry 32 grams of O₂ form 36 grams of H₂O, 40.2 grams of O₂ how much mass of H₂O will it form?

mass of H_{2}O=\frac{40.2 grams of O_{2} *36 grams of H_{2}O }{32 grams of O_{2} }

mass of H₂O= 45.225 grams

<u><em>45.225 grams of H₂O will be formed when 36.8 g H₂ is mixed with 40.2 g O₂</em></u>

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How many atoms are in two water molecules? pls and thxxxxxxxxx
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Answer:

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Explanation:

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