Bobby was given four different hydrochloric acid solutions, each of which had a different molarity. He was curious to see what would happen if he put a 5 gram piece of zinc metal into 50 ml into each HCL solution. In which HCL solution would the zinc metal have the quickest rate of reaction?

a is the correct answer

the answer is c i took the test

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. no that is not a smiley face

explanation: