Answer:
this does not look like chemistry but I believe your answer is 50.9439
Explanation:
hope it helps
Answer:
To make the buffer you must add 1 mole of MES in the liter of the buffer.
Explanation:
To find pH of the buffer of MES you must use Henderson-Hasselbalch equation:
pH = pKa + log [MES⁻] / [MES]
<em>Where [MES⁻] is molar concentration of unprotoned MES and [MES] molar concentration of the acid</em>
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Replacing:
6.2 = 6.2 + log [1M] / [MES]
<em>Molar concentration of [MES⁻] is 1mol / L = 1M</em>
0 = log [1M] / [MES]
1 = [1M] / [MES]
[MES] = 1M
That means to make the buffer you must add 1 mole of MES in the liter of the buffer
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Answer: True
Explanation:
Physical change is a change in which there is no rearrangement of atoms and thus no new substance is formed. There is only change in physical state of the substance.
Chemical change is a change in which there is rearrangement of atoms and thus new substance is formed. There may or may not be a change in physical state.
Slowly heating butter in a pan until it changes from a solid to a liquid is an example of a physical change is true as solid changes to liquid state and there is no breaking or making of chemical bonds.
The answer for this one is B, you are adding more of the product, making K