Two well-known gas phase reactions take place in the dehydration of ethane: C2H6  C2H4 + H2 (a)

C2H6 + H2  2CH4 (b)

Given the product distribution measured in the gas phase reaction of C2H6 as follows:

C2H6 27%

C2H4 33%

H2 13%

CH4 27%

a. What species was the limiting reactant?

b. What species was the excess reactant?

c. What was the conversion of C2H6 to CH4?

d. What was the degree of completion of the reaction?

e. What was the selectivity of C2H4 relative to CH4?

f. What was the yield of C2H4 expressed in kilogram moles of C2H4 produced per kilogram mole of C2H6?

g. What was the extent of reaction of C2H6?

What is the solubility of substance?

If a sample of radioactive isotopes takes 600 minutes to decay from 400 grams to 50 grams, what is the half-life of the isotope?

(04.05 hc) analyze the given diagram of the carbon cycle below. an image of carbon cycle is shown. the sun, a cloud, two trees, one on the left and the other on the right, an animal, lake, and a factory are shown in the image. an arrow is shown from the sun towards the left tree marked a. the sun is marked b. there is an arrow from the air above the clouds, marked c, towards the left tree. an arrow from a location close to the ground marked d points towards dead organisms, which is a label under the animal. an arrow marked e points from the right tree straight up to the clouds. an arrow marked f points from the animal straight up to the clouds. an arrow marked g points from the factory towards the air above the clouds, c. there is an arrow pointing from the air to the lake labeled carbonates in water, an arrow pointing down from dead organisms to fossils and fossil fuels, and an arrow from fossils to the factory. part 1: which compound does c represent? part 2: name a process that could release this compound into the air. part 3: explain how the elements that form it are conserved during the carbon cycle. use complete sentences to explain your answer.