El fluoruro de hidrógeno es un ácido que en disolución 0.1 mol/L se disocia en un .
a) Calcula el pH de una disolución 0.1 mol/L de HF.
b) Halla la de dicho ácido.
A man pulls a sled up a ramp using a rope attached to the front, as illustrated in the figure.
The sled has a mass of 80 kg. The kinetic friction coefficient between the sled and the ramp is (), the angle between the ramp and the horizontal is , and the angle between the rope and the ramp is . (…)