Answer:
The total volume of the buffer is 75,0mL
Explanation:
A buffer is a mixture of a weak acid with its conjugate base or a weak base with its conjugate acid.
The buffer than Stu and Doc made is:
CH₃COOH ⇄ CH₃COO⁻ + H⁺
Doc add 30.0 mL of 0.0635 M CH₃COOH while Stu add 45.0 mL of 0.0285 M NaCH₃COO (CH₃COO⁻)
Thus, the total volume of the buffer is:
30,0mL + 45,0mL =<em> 75,0 mL</em>
I hope it helps!
Option b), Julia's car engine overheats when the outside temperature exceeds 100 degrees is the best plausible explanation for her “check engine” light coming on while driving her car on days with temperatures over 100 degrees.
<h3>Reasoning</h3>
The other options that the engine needs to be replaced, that it cannot withstand high temperatures, or that Julia cannot drive her car on days when it is over 100 degrees outside are not plausible explanations for the situation because that is not what it indicates. the expression “check engine”
On the other hand, option b) is a plausible explanation because the light that comes on with the "Check engine" indicator is due to a temperature sensor that the engine has and that is activated once a certain temperature is exceeded.
In this case, the sensor is sensitive to a temperature differential, since it is activated when the motor compares the degrees of internal temperature with the external one.
Learn more about temperature indicators at brainly.com/question/11464844
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Answer:
the bond that forms between carbon and oxygen to create carbon dioxide
A polar covalent bond
D liquid water turning into caper
Its much stronger than if something was not strong.