The dehydration butanol on alumina is carried out over a silica-alumina catalyst at 680 K. CH3CH2CH2OH →CH3CH = CHCH3 + H2O

The rate law iswith k = 0.054 mol/gcat·h·atm and KBu = 0.32 atm^–1. Pure butanol enters a thin-tubed, packed-bed reactor at a molar flow rate of 50 kmol/hr and a pressure of 10 atm (1013·kPa).

Required:
a. What PBR catalyst weight is necessary to achieve 80% conversion in the absence of pressure drop?
b. What "fluidized CSTR" catalyst weight is necessary to achieve 80% conversio?

the answer to your question is c

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them