The process involves the separation of a binary mixture containing heptane and ethylbenzene using a countercurrently operated continuous fractionation unit. a feed at a flowrate of 252 mol/h containing 43 wt% heptane and 57 wt% ethyl benzene is to be fractionated at 1 bar to give a distillate with 95 mol% heptane and a bottom product with 95 mol% ethyl benzene. the reflux ratio will be 70% more than the minimum. the feed enthalpy of vaporization is 36825 j/mol and liquid heat capacity is 317 j/molk. in the winter the temperature of the feed drops to 377 k while in the summer it reaches a maximum of 391 k.
calculate the distillate and bottom product flowrates.
find the minimum number of stages.
find the number of actual trays needed for the design of the distillation column. which
season will you design the unit for (winter or summer)? explain.
for the design case you chose, find the temperature of the top most tray, the reboiler and
the feed tray.
state the temperature requirement for the condenser.
find the compositions of the streams entering the feed stage.
calculate the recovery of heptane.
if you are stuck with an existing column that has only 11 real trays, with the feed tray
being tray 5, what can you do to achieve the same distillate and bottom product compositions? explain with calculations/graph

1.consider the following balanced equation and answer parts a through. show calculations for each part.  

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)  

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.  

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3  

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.  

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.  

explanation:

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

sure im new too!

explanation: