Monica and Alexis are doing an experiment in science class with baking soda and vinegar. Their teacher is happy with the results of their experiment; however she wants to make sure
that the students can get the rest of their trials done before the end of class. What is one
way that Monica and Alexis can speed up the reaction without affecting the results?
They can add more baking soda.
There is not way for them to speed up the reaction.
They can add ice to the vinegar to decrease its temperature.
They can do the experiment on a hot plate to increase the temperature.

nacl is added to the aqueous of what? ? in order to get a proper answer you have to specify the exact composition of the aqueous solution.

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

bcde is the incorrect answer it is a