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sarahabuadas7396
21.02.2020 •
Chemistry
Determine the moles of H+ reacting with the metal based on the following experimental data. 10.00 mL of 1.00 M HCl solution is added to a sample of Mg metal. The reaction goes to completion and all of the Mg metal is gone. 27.08 mL of 0.30 M NaOH solution is required to reach the end point when titrating the remaining HCl.
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Ответ:
Approximately
.
Explanation:
Convert both volumes to standard units (that is: liters.)
Number of moles of
initially present (in the
solution at
.)
Number of moles of
from the titration:
Hence,
.
Ответ:
The answer is option C
Explanation: The law of conservation of momentum states that when two bodies collide, in a closed or an isolated system, the total momentum before the collision is equal to the total momentum after the collision provided that no external force is acting on them.
That is, the system momentum remain the same.
Momentum, p = mv (measured in Kg. m/s)
Where
V = velocity of the body
m = mass of the body
For conservation of momentum
mv = constant
That is,
m1v1 = m2v2