Since oxygen is more electronegative than hydrogen, which is less electronegative, H2O is a polar covalent molecule (more electronegative). This difference causes oxygen to produce a slight negative charge and hydrogen to develop a slight positive charge, which leads to the establishment of partial charge separation. This is the rationale behind why water, although being a covalent substance, dissolves ionic compounds.
Due to the two oxygen molecules' strong electronegative attraction to the two hydrogen molecules, the two molecules share electrons, making the compound a covalent one.
Simple covalent molecules are those kept together by covalent bonds and made up of only a few atoms. Examples include ammonia (NH 3), carbon dioxide (CO2), and water (H 2O).
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Answer:
Explanation:
We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.
Mᵣ: 17.03 18.02
4NH₃ + 6NO ⟶ 5N₂ + 3H₂O
m/g: 15.0
(a) Moles of NH₃
(b) Moles of H₂O
(c) Mass of H₂O
Answer: Moles of CO present in the flask are 0.175
Explanation:
Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients.
Equilibrium concentration of =
Equilibrium concentration of =
The expression for equilibrium constant for this reaction will be,
Equilibrium concentration of =
Thus moles of CO present in the flask are 0.175
Answer:
natural selection
Explanation:
it is a biological selection of genes, whether dominant or negative.