Answer: The concentration of KOH for the final solution is 0.275 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
where,
n = moles of solute
= volume of solution in ml = 150 ml
moles of solute =
Now put all the given values in the formula of molality, we get
According to the dilution law,
where,
= molarity of stock solution = 1.19 M
= volume of stock solution = 15.0 ml
= molarity of diluted solution = ?
= volume of diluted solution = 65.0 ml
Putting in the values we get:
Therefore, the concentration of KOH for the final solution is 0.275 M
Answer:between 25 and 40 degrees Fahrenheit
Explanation:
Heat pumps do not operate as efficiently when temperatures drop to between 25 and 40 degrees Fahrenheit for most systems. A heat pump works best when the temperature is above 40. Once outdoor temperatures drop to 40 degrees, heat pumps start losing efficiency, and they consume more energy to do their jobs.
C.because the student started with sugar and water, and ended with sugar and water
Answer: 80 ml
Explanation:
V= vol ml, C = concentration %
V1 = 20ml, C1 = 20%
V2 = ? , C2 = 5%
V1C1 = V2C2
V2 = (V1C1)/C2
V2 = (20ml x 20%) / 5% = 80 ml
THE ANSWER FOR UR QUESTION IS
WHICH ELEMENT IS CLASSIFIED AS A INNER TRANSITION ELEMENT ?
ANS :- LANTHANIDES AND ACTINIDES ARE CLASSIFIED AS AN INNER TRANSITION ELEMENT .
HOPE THIS HELPS!!!!
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