The given statement is true, because the activation energy must be provided in order for the molecule to reach the transition state because it is a high-energy state. Reactant molecules don't stay in the transition state for very long since it is unstable; instead, they move on to the next phase of the chemical reaction right away.
To create a successful transition state (with lower activation energy). Heat, which is the most frequently employed energy source, favours the breakdown of processes and lowers the amount of energy needed when the enzyme attaches to the substrate.
The remainder of the process can be completed once the molecule has taken in enough energy to reach the transition state.
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First you need to know how ionic compounds are created!
Ionic compounds are formed by IONS (Obviously, what am I, a dummy?)
There are two types of ions: anions and cations.
Anions can only be formed by nonmetals, and cations can only be formed by metals.
In order for ions to bond, there must be one anion and one cation, because opposite charges attract.
Let's look at your choices.
1) Ca + Br can form ionic bonds
2) Na + F can form ionic bonds
3) Li + Cl can form ionic bonds
However...
4) Mg + Ar
This is a special case. Ar is a NOBLE GAS, which means that it has the maximum number of valence electrons (8) in its outermost shell. Therefore, ANY type of bonding is IMPOSSIBLE.
Your answer should be 4) Mg + Ar
Answer:
Explanation:
Hello!
In this case, since the determination of empirical formulas requires the moles of the constituents, we first need to calculate the moles in the given grams of the listed elements:
Next, we divide each moles by the fewest moles, in this case, those of phosphorous, in order to determine their subscripts in the empirical formula:
Thus, we multiply these subscripts by 5 to get whole numbers:
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FeO + Al -> AlO + Fe
As you can see, this type of reaction would lead to be a Single Placement (or Replacement) reaction!
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The pH can be determined by the base dissociation constant value (Kb). The pH of the solution after 15 mL of ammonia is added to the solution will be 10.26.
<h3>What is pH?</h3>
The pH of the solution can be given by the pOH value that is determined by the concentration and the base dissociation constant.
The balanced chemical reaction is given as,
HCl + NH₃ → NH₄Cl
The moles before reaction was 0.015L× 0.15M = 0.00225 moles and, 0.025 L × 1.00 M = 0.025 moles
The moles after reaction are 0.00225 moles - 0.025 moles = 0.02275 moles
pOH is calculated as,
pOH = 4.74 + log ( 0.00225 ÷ 0.02275 )
= 3.73
Further pH is calculated as,
pH = 14 - 3.73
= 10.26
Therefore, 10.26 is the pH of the solution.
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