Air flows over a solids lab of frozen carbon dioxide (dry ice) with an exposed cross-sectional surface area of 0.001m2. the carbon dioxide sublimes into the 2m/s flowing stream at a total release rate of 2.29x10−4mol/s. the air is at 293k and 1.013x105pa pressure. at that temperature, the diffusivity of carbon dioxide in air is 1.5x10−5 m2/s and the kinematic viscosity of the air is 1.55x10−5 m2/s. determine the value of the mass-transfer coefficient of co2 subliming into the flowing air under the conditions of the experiment.
show all step and how to calculate pressure.

- "the acute form of diverticulitis can manifest itself with one or more severe attacks of infection and inflammation.

the inflammation of diverticulitis can eventually result in a bowel obstruction, which may cause constipation, thin stools, diarrhea, abdominal swelling or bloating, and abdominal pain."

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms