5. Consider the equation for a saturated solution of potassium chromate:
K, CrO4(s)+ energy 5 2K+ (aq) + Cro. (aq)
A concentration vs. time graph for a saturated solution of K Cr0is shown below.
K+
Concentration
(M)
Cr02
Time
What happened at time t?
A. KNO, was added to the system.
B. K Cro. was removed from the system.
C. The temperature of the system was increased.
D. The temperature of the system was decreased.
Due to the stress at time t, will the solubility increase or decrease? Explain.

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

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;