Describe a safe method for making pure crystals of copper sulfate from copper carbonate and dilute sulfuric acid.

SEE EXPLANATION

Explanation:

The equation of this reaction is shown below;

CuCO3(s) + H2SO4(aq) > CuSO4(aq) + H2O(l) + CO2(g)

Our intention is to make pure crystals of copper sulfate from copper carbonate and dilute sulfuric acid.

We have to place the dilute sulfuric acid in a beaker and then add copper carbonate using a spatula little by little until the copper carbonate is in excess or effervescence is no longer observed.

The solution is now filtered using a filter paper and funnel. This removes the excess copper carbonate.

The solution is now poured into an evaporating dish/basin and heated using a bunsen burner until crystals of copper sulfate are left behind.

a

explanation:

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