Buffer capacity is defined as the capacity of a buffer to resist changes in pH upon addition of an acid or a base. The buffer capacity is high when the concentration of the acid and its conjugate base is high, and the pH of the solution is near the pKa value of the weak acid.
The greater the buffer capacity, the better it can resist pH changes upon addition of an acid or base. The buffer capacity of a solution is highest when the pH is near the pKa value of the weak acid.
A buffer is a solution that has the ability to resist changes in pH upon the addition of an acid or base. The buffer capacity is highest when the pH of the buffer is close to the pKa of the weak acid component in the buffer. Therefore, the buffer capacity is the highest when the pH is equal to the pKa value of the weak acid.
Therefore, the solution with the greatest buffer capacity is the one with the highest concentration of both the weak acid and its conjugate base, which can resist the changes in pH with the addition of an acid or base.
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Answer: If you have a crush on someone, it can be difficult to decide whether to express your feelings or not. There are no hard and fast rules, but here are some things to consider:
Assess your feelings: Before you decide to act on your crush, it’s important to take some time to reflect on your feelings. Ask yourself why you like this person and what you hope to gain from expressing your feelings. Be honest with yourself about your motivations and expectations.
Consider the risks: While expressing your feelings can be exciting, it can also be risky. You may face rejection or damage an existing friendship. Think about how you would feel if the other person doesn’t feel the same way.
Think about timing: Timing is important when it comes to expressing your feelings. You don’t want to catch the other person off guard or put them in an awkward position. Consider whether this is a good time for both of you.
Be respectful: If you do decide to express your feelings, make sure you do so in a respectful way. Be honest but also considerate of the other person’s feelings.
Be prepared for any outcome: No matter what happens, be prepared for any outcome. If the other person doesn’t feel the same way, try not to take it personally. Remember that there are plenty of other people out there who would be lucky to have you in their life.
I hope this helps! Let me know if there’s anything else I can do for you.
Answer: Ask them
Explanation:
If you miss your chance you might regret it.
Answer:
Yes; new substances formed, as evidenced by the color changes and bubbles. Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change
The experiment shows that the atoms are mostly empty spaces with most of the mass concentrated at the center, which is the nucleus of the atom.
Rutherford's model also called Rutherfords' atomicmodel was a model describing the nuclear atom or the planetary model of the atom. It gave a description of the structure of atoms.
It was proposed the year 1911 by the New Zealand-born physicist named ErnestRutherford. This model was used to describe the atom. It described the atom as tiny and dense which has a positively charged core called the nucleus.
In the nucleus of the atom, almost all the mass is the atom is concentrated. Around the nucleus, there are the light, negative particles which are called electrons. These circulate around the nucleus at some distance like planets revolve around the Sun.
Therefore, the experiment shows that the atoms are mostly empty spaces with most of the mass concentrated at the center, which is the nucleus of the atom.
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a Muslim pilgrim
a book of Sharia laws
an ancient stone temple
Answer: Ka'aba is Muslim pilgrimage
Explanation: Kaaba is a small shrine located in Mecca and is considered as a sacred spot by Muslims.
It is a cube shaped structure made up of graystone and marble. It's corners correspond to the points of a compass and is mostly kept covered with a cloth called kiswah.
Answer:
D. An ancient Stone Temple
Explanation:
Edg 2021
The theoretical yield is calculated from the amount of the excess reactant present.
The theoretical yield is calculated from the amount of the limiting reactant present.
Answer: the fourth stament, The theoretical yield is calculated from the amount of the limiting reactant present.
Justification:
1) Limiting reactant is the one that is in less proportion than the theoretical mole ratio.
2) Excess reactant is the one that is in greater proportion than the theoretical ratio.
3) For example, if you have the equation A + 2B → C, means that 1 mol of A react with 2 moles of B to yield 1 mol of C.
As per that equation, the theoretical mole ratio is 1 mol of A : 2 moles of B : 1 moles of C.
If the actual amounts of A and B were 2 and 4, respectively, they were in the same ratio as the theoretical ratio, and all of the both reactants could react.
But if you had, for example, 2 moles of reactant A and 2 moles of reactant B, only one of the moles of A could react with the 2 moles of B, so B would be the limiting reactant: the whole 2 moles of B would react, while only 1 mole of A would reactant, and 1 mole of A would be left over (A is in excess).
Therefore, you cannot use the 2 moles of A to calculate the theoretical yield (since only 1 mole reacted), instead you must use the limiting reactant (B), which is the one that reacts completely.