Answer: B
Explanation:
A is evaporation. B is condensation. C is precipitation.
2 or more simple machines I hope this help :)
Answer:
Explanation:
Hello,
In this case, the dissociation of the given weak acid is:
Therefore, the law of mass action for it turns out:
That in terms of the change due to the reaction extent is:
Thus, by solving with the quadratic equation or solver, we obtain:
Which clearly matches with the hydrogen concentration in the solution, therefore, the pH is:
Regards.
Answer:
Cabon-12 has same average atomic weight and mass number.
Explanation:
carbon-12 has average atomic weight 12 amu and mass number of 12.
amu represents average of mass of a nucleon.
As carbon-12 has same average atomic mass and mass number therefore carbon-12 is a good standard to determine average mass of a nucleon.
Again, abundance of carbon-12 isotope is almost equal to 99%. Therefore fluctuation of average atomic weight from 12 amu is very very low.
So, carbon-12 is taken as a standard to determine mass of a nucleon.
Hence atomic mass of carbon-12 is 12 amu.
D = m / V
1.025 = m / 100,000 mL
m = 1.025 x 100,000
m = 102,500 g