Answer:
creo que es cinemática, eso creo
When
NaC2H3O2 is in solution, it would act as a base since it ionizes into sodium
ions and acetate ions, the acetate ions would interact with water with the
following reaction:<span>
C2H3O2- + H2O <---> C2H3O2H + OH-
So, from the reaction, hydroxide ions are formed
giving it basic properties. We calculate as follows:
[NaC2H3O2] = [Na+] = [C2H3O2-] = 0.250 m
By the ICE table:
[C2H3O2-] C2H3O2H OH-
I
0.250
0 0
C
-x
+x +x
------------------------------------------------------------
E 0.250
- x x
x
1.80×10^−5 = x^2 / (0.250 - x)</span>
Solving for x, we have
x = 0.002112
pOH = -log 0.002112
pOH = 2.68
pH = 14 - 2.68 = 11.32
Therefore, the pH of the solution is about 11.32.
Answer:
Because the mass of the the earth is way bigger than the mass of a classmate
Explanation:
Formula for force of gravity is;
F = Gm1•m2/r²
Where m1 and m2 are the two objects masses in question.
So, m1 may be your mass while m2 may be either the mass of the earth or your classmate.
The bigger the mass of m2, the more the force of gravity
Mass of the earth is about 5.97 × 10^(24) kg is which is so much more bigger than that of the classmate which is a human being.
Therefore, the reason why you may feel the effect of the gravitational forces between you and Earth, but not between you and a classmate is probably because the mass of the the earth is way bigger than the mass of a classmate
