You are the engineer ischarge of an octane tank (3 ft diameter, 10 ft tall) and its safe purging. there is an incident with the tank and some of your engineer colleagues (who did not have an undergraduate safety class) are reporting that the tank exploded. the normal process pressure of the tank is 382 psig and ambient temperature of 298 k. initial reports are that the tank was not inerted properly causing it to explode. octane molecular weight - 114. [171] what is the available energy (lb tnt) in the tank using thermodynamic availability? [175] assuming an unconfined gas explosion, and that the tank contains octane gas, what is the available energy (lb tnt) in the tank if the octane exploded? [17c) after the incident investigation it was found that all tank fragments from the 'explosion were found less than 2000 ft from the tank. using your result from [17a). [17b) and fig. 6-26 what is your conclusion? i. e. was there an explosion?

10. translate each of the following chemical equations into a sentence. a. 2 zns(s) + 3 o2(g) -> 2 zno(s) + 2 so2(g) b. cah2(s) + 2 h2o(l) -> ca(oh)2 (aq) + 2 h2(g)

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

Straightforward questions answered in the powerpoint slidesreaction: heating the starting materials under refluxwhat does it mean to heat under reflux? why do we choose water as the reflux solvent? what are boiling chips used for? why do we put a condenser on top of the reaction? why do we add heat and let the reaction stir for 30 minutes? why do we add sulfuric acid to the reaction after it cools as opposed to when it’s still hot? separation: filtration of precipitatewhy don’t we do an aqueous and organic extraction in the separatory funnel? why do you rinse the salicylic acid on the filter with ice cold water? purification: recrystallization of salicylic acid (no hot filtration needed)what is the difference in the amount of room temperature water vs. boiling water needed to dissolve the salicylic acid (assume a 1.2 gram yield of salicylic acid)? remember, in the lab if you need x ml of boiling water to dissolve a solid, then you should add a little more (definitely no more than 1.5 times the theoretical amount) to ensure it doesn’t recrystallize prematurely.analysis: melting point of salicylic acidwhat can you conclude if the melting point of the salicylic acid you just synthesized is 152-155oc and the 1: 1 mix of your product and “synthetic” salicylic acid is 151-154oc?