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...analyzed? Which of the following mobile phases will result in the lowest Rfs for the compounds analyzed? A) CH3COCH3 B) CH3OH C) CH2CCl2 D) CH3(CH2)4CH3 E) CH3CH2OCH2CH3 A has a double bond between the middle C and the O. Im not sure what compounds the question is reffering to...

Hello, I am not sure of the calculation of this. I have to use the shannon-weiner index to solve it. As a developer you are trying to decide which of two properties to buy to build on. You know it will be easier to get a permit to build on the site with the lowest biodiversity. Using two...

Hello, I am not sure of the calculation of this. I have to use the shannon-weiner index to solve it. As a developer you are trying to decide which of two properties to buy to build on. You know it will be easier to get a permit to build on the site with the lowest biodiversity. Using two...

A hurricane wind blows across a 6.3 m x 16 m flat roof at a speed of 190 km/hr. What is the pressure difference? How much force is exerted on the roof?

A 4.0 mL syringe has an inner diameter of 6.0 mm, a needle inner diameter of 0.27 mm, and a plunger pad diameter (where you place your finger) of 1.2 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. A:What is the minimum force the nurse needs to...

A U-shaped tube is connected to a box at one end and open to the air at the other end. The box is full of gas at pressure p_gas, and the tube is filled with mercury of density 1.36×104 kg/m^3. When the liquid in the tube reaches static equilibrium, the mercury column is h_1 = 11.5 cm high in...

A diver 50 m deep in 10 C fresh water exhales a 1.5-cm-diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20C? Assume that the air bubble is always in thermal equilibrium with the surrounding water.

Hi everyone, I am having a little trouble understanding real-life applications of these energy transformations. Here's an example question for my test: As Michael Phelps swims with a constant speed, what energy transformation takes place? Echem-->Ethermal Echem-->kinetic Kinetic--->Echem...