A 55.0 grams sample of strontium arsenite is mixed with 65.0 grams of chromic acid in a double replacement reaction form strontium chromate and arsenous
acid. After the reaction was performed, 45.7 g of the actual strontium chromate
were collected.
a. Determine the limiting reactant.
b. Determine the excess reactant.
c. Determine the theoretical yield of Strontium Chromate in grams.
d. Determine the amount of excess reactant left over in grams
e. Determine the percent yield of strontium chromate.

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

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms

it's 3.2 on edge, i just took the test.