Answer:
Combustion reactions must have oxygen as a reactant. Note that the water that is produced is in the gas rather than the liquid state because of the high temperatures that accompany a combustion reaction.
Explanation:
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Answer: The given statement is false.
Explanation:
A property than can be measured and that is sometimes visible in nature is known as physical property.
For example, boiling point, mass, density, volume etc are all physical properties.
So, when we increase concentration of components in a solution then there will be increase in mass and volume of solution. As a result, there will be change in density also occurs as density is mass present in per unit volume.
Hence, we can conclude that the given statement physical properties of a solution are not affected by the concentration of the components, is false.
B) The atomic orbitals overlap and electrons are shared between the atoms forming bonds.
C) A transfer of electrons forms ions which are electrostatically attracted forming bonds.
D) Orbital exchange occurs between the atoms to redistribute the electrons and form bonds.
Answer:
B
Explanation:
A) The sea of electrons only happen with metalic bond, a bond with two metalic elements.
B) As both elements in ammonia (N and H) are non-metals we don't observe an transfer of electrons, both elements share the number of electrons needed to stablize it (3 electrons for the N and 1 for the H).
C) To have a transfer of electrons, we need a bond between a metal and a non-metal, in this case, N and H are non-metals, so this doesn't happen.
D) The electrons are shared, only the electrons nothing happens between the orbitals.
How is electron movement related to covalent bonding in ammonia, NH3?
A) Electrostatic sharing in a sea of electrons around the atoms allows bonds to form.
B) The atomic orbitals overlap and electrons are shared between the atoms forming bonds.
C) A transfer of electrons forms ions which are electrostatically attracted forming bonds.
D) Orbital exchange occurs between the atoms to redistribute the electrons and form bonds.
The electron movement related to covalent bonding in ammonia, NH3 is The atomic orbitals overlap and electrons are shared between the atoms forming bonds. The answer is letter B.
The statement is true; reaction rate in chemistry refers to the speed at which reactants are transformed into products. Its rate is influenced by factors like concentration, temperature, and the presence of catalysts.
"Reaction rate is the speed with which reactants are converted to products in a chemical reaction," as stated above, is correct. In chemistry, the term Reaction Rate is used to describe how rapidly or slowly changes occur in a chemical reaction. It essentially provides information about how quickly reactants are transformed into products. Factors such as concentration, temperature, and presence of catalysts can influence the rate of a reaction.
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