(i)What is the free energy of mixing I g of polystyrene of molar mass M = lif gmol- 1• with I mol of cyclohexane at 34 °C?Note that 34 °C is the 0-temperature for a polystyrene solution in cyclohexane (Flory inter­action parameter x = 1/2). The molar volume of polystyrene is vp, = 9.5 x 104 cm3 mo1- 1, the molar volume of cyclohexane is Vcyc= 108cm3 mol - 1• Assume no volume change upon mixing and assume that the volume of one solvent molecule is the lattice site volume v0.(ii)What does the sign of the free energy of mixing imply about the stability of a homogeneous solution?(iii)Under what conditions does the homogeneous solution spontaneously phase separate by spinodal decomposition?(iv)When is the homogeneous solution metastable?

(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.