The diagram shows an electric motor.
2 answers:
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Answer:
2.
3.
Explanation:
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2. In this case, we can evidence the problem by which volume and temperature are involved, so the Charles' law is applied to:
Thus, considering the temperatures in kelvins and solving for the final volume, V2, we obtain:
Therefore, we plug in the given data to obtain:
3. In this case, it is possible to realize that the 3.7 moles of neon gas are at 273 K and 1 atm according to the STP conditions; in such a way, considering the ideal gas law (PV=nRT), we can solve for the volume as shown below:
Therefore, we plug in the data to obtain:
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<u>Answer:</u> The for calcium hydroxide is
<u>Explanation:</u>
To calculate the concentration of acid, we use the equation given by neutralization reaction:
where,
are the n-factor, molarity and volume of acid which is
are the n-factor, molarity and volume of base which is
We are given:
Putting values in above equation, we get:
The concentration of comes out to be 0.011 M.
The balanced equilibrium reaction for the ionization of calcium hydroxide follows:
The expression for solubility constant for this reaction follows:
Putting the values in above equation, we get:
Hence, the for calcium hydroxide is