The energy needed to get a reaction started is thea. enzyme energy.
b. activation energy.
c. catalyst energy.
d. chemical energy.
Answers
Activation energy is the energy needed to start a chemical reaction. The correct answer to the given question is option b. activation energy.
The energy needed to get a reaction started is called the activation energy. It is the minimum amount of energy required for a chemical reaction to occur. Activation energy is needed to break the existing bonds in reactant molecules and form new bonds to produce product molecules.
The correct answer to the given question is option b. activation energy.
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A catalyst speeds up a reaction, as well as an enzyme, and chemical energy is just a form of energy.
Answer: Activation energy
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Answers
Answer: A) Na+ and O2-
Explanation:
To know the electronic configuration, one has to determine the numbers of electrons present in each atom.
Na+ means a sodium atom that has lost one valence electron. A Sodium atom initially has 11 electrons, but having lost an electron making it 10 electrons remaining with electron configuration of 1s2 2s2 2p6.
O2- means oxygen atom that has gained two valence electrons. An oxygen atom initially has 8 electrons, having gained two electrons makes it 10 electrons with electron configuration of 1s2 2s2 2p6. same as Na+
The purpose of gaining or losing electrons is to attain a stable duplet or octet structure.
The two ions with same electronic configuration are Na and O²
.
What is electronic configuration?
Electronic configuration is defined as the distribution of electrons of an atom or a molecule in orbitals of an atom or of a molecule.It describes each electron which is moving independently in it's orbital.
Electrons are able to move from one configuration to another by either absorption or emission of a quantum of energy, which is called as a photon.It is useful in understanding the structure of periodic table.
Considering the pair of sodium cation and oxygen anion the sodium atom with one positive charge has 10 electrons and oxygen anion with two negative charge has 10 electrons .
The elements with same number of electrons are called isoelectronic species.
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The blue and red parts of the atoms represent the?
Answers
double-replacement reaction.
c.
replacement reaction.
b.
decomposition reaction.
d.
combustion reaction.
Answers
Final answer:
The equation A + BX = AX + B represents a single-replacement or displacement reaction in Chemistry, where a more reactive element replaces another in a compound to form a new compound and releases the displaced element.
Explanation:
The equation A + BX = AX + B is a representation of a general single-replacement reaction, also known as a displacement reaction in Chemistry. In this type of reaction, a more reactive element (in this case represented by A) displaces or replaces another element (represented by B) in a compound, resulting in a new compound and a separate element as products. Here, A replaces B in the compound BX, leading to the formation of the new compound AX and the release of element B.
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Answers
Answer:
1.50 L.
Explanation:
- From the general gas law:
PV = nRT,
Where, P is the pressure if the gas,
V is the volume if the gas container,
n is the no. of gas moles,
R is the general gas constant,
T is the temperature of the gas.
- At constant P and T:
n₁V₂ = n₂V₁.
V₁ = 1.0 L, V₂ = ??? L.
n₁ = mass/molar mass = (2.05 g)/(32.0 g/mol) = 0.064 mol.
- n₂ is the no. of moles of the total gas (2.05 g + 1.0 g).
n₂ = n₁ + (1.00 g)/(32.0 g/mol) = 0.0953 mol.
∴ V₂ = n₂V₁/n₁ = (0.0953 mol)(1.0 L)/(0.064 mol) = 1.489 L ≅ 1.50 L.
Answers
Answers
Answer:
The correct answer is option (4).
Explanation:
Electrolysis it is chemical technique used to separate out the constituent of solution by passing an electricity through it. Electricity is supplied to the solution is done by the external power sources.
For example:
Neutralization is the type of chemical reaction which an acid reacts with base along with the formation of water molecule and salt.
Fermentation is chemical reaction in which substance is break down into simpler compounds by the action of microorganism.Generally sugar or carbohydrates are broken down into alcohols or acids.
Synthesis is chemical reaction which two or more simpler compounds fused to together to give a single new compound.