Examples of Physical Changes<span>crushing a can.melting an ice cube.boiling water.mixing sand and water.breaking a glass.dissolving sugar and water.shredding paper.<span>chopping wood.</span></span>
Answer:
A. maintain electrical neutrality in the half-cells via migration of ions
Explanation:
Salt bridge -
For an electrochemical reaction , involving an anode and a cathode , both the electrodes are connect via a salt bridge to complete the circuit for the reaction .
One of the very important use of a salt bridge is to maintain the electrical neutrality of the respective half cells , which is achieved by the movement of ions .
Hence , from the given options , the correct option is ( a ) .
Answer:
548s = t
Explanation:
A first-order reaction has as general equation:
![ln \frac{[A]_t}{[A]_0} = -kt](https://tex.z-dn.net/?f=ln%20%5Cfrac%7B%5BA%5D_t%7D%7B%5BA%5D_0%7D%20%3D%20-kt)
Where ![[A]_t](https://tex.z-dn.net/?f=%5BA%5D_t)
is the concentration of the reactant in the time t, ![[A]_0](https://tex.z-dn.net/?f=%5BA%5D_0)
is the initial concentration of the reactant, k is rate constant and t is time. Replacing with values of the problem:
-1.65 = -3.00x10⁻³s⁻¹×t
<em>548s = t</em>
<em></em>
I hope it helps!
Answer:
Organs of the male productive system are the scrotum, spermatic ducts, sex glands, and penis. They coinside to produce sperm, gametes, and semen.
Explanation:
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Explanation:
It is given that 36400 cal per pint is the heat necessary to boil water. Hence, heat required to boil 0.9 pint of water is as follows.
= 32760 cal
As 1 cal = 4.184 J. Therefore, the amount of energy absorbed by the 0.9 pint of water from room temperature to boiling point is as follows.
J
= 137067.84 J
or, = 137.067 kJ (as 1 kJ = 1000 J)
Therefore, we can conclude that heat energy required to be absorbed by the water at the moment it begins to boil is 137.067 kJ.
