Considerando la siguiente reacción: Al(s) + HCl(ac) → AlCl3(s) + H2(g). ¿Cuántos litros de gas se obtendrán, si se hacen reaccionar 1.5 kg de un mineral que contiene un 75% de aluminio puro con una
solución de ácido clorhídrico 0.24 M?

c) should be the answer.

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.

d) a person who learns about the world by observing it.

explanation:

scientist are people who discover why and how things are done and made in the world.