You are given two beakers a and b and china rose as an indicator .beaker a has 20ml of magnesium hydroxide and 100ml of water. and beaker b has 50ml of magnesium hydroxide and 100ml of water. when these solutions are tested with china rose,

a. the darkness of the green color produced by the indicator were not same in each of the

solutions. what could be the possible reasons?

The darkness of the green color produced in the beakers is different because the concentration of magnesium hydroxide is different in both beakers.

Explanation:

The reason why the flasks have different color intensity is related to the concentration of magnesium hydroxide.

An indicator usually changes color because its conformation changes according to the pH. The higher the base level, the pH is higher. Then the color shift will be more intense.

Beaker A has 20 ml of magnesium hydroxide and 100 ml of water and beaker B has 50ml of magnesium hydroxide and 100ml of water.

Beaker A is more diluted than beaker B.

Therefore, beaker B is greener than beaker A.

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