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galina1969 [7]
2 years ago
9

You have left the carton of milk out of the refrigerator overnight and it has spoiled. This is an example of a _________.

Chemistry
1 answer:
jekas [21]2 years ago
5 0
Chemical change. Compounds and molecules in the milk are reacting with the air and breaking down and forming new molecules.
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A mixture of 620 lbmol/h of 36 mol% benzene and the remainder toluene is separated continuously into two products. One product i
Licemer1 [7]

Answer:

P_1=206.7lbmol/h\\\\P_2=413.3lbmol/h

Explanation:

Hello!

In this case, for the separation of the benzene-toluene mixture, we can use the following mole balances including the given mole fraction at each stream per species:

B:0.36*620=0.98P_1+0.05P_2\\\\T:0.64*620=0.02P_1+0.95P_2

That can be solved by using a solver for P1 (benzene-rich flow) and P2 (toluene-rich flow):

P_1=206.7lbmol/h\\\\P_2=413.3lbmol/h

Best regards!

3 0
2 years ago
How many joules of heat are lost when 150.0 g of steam are cooled from 124. C to 86 C?
Alinara [238K]

 The  amount   of  joules  of heat  that are lost when 150.0 g of steam  are cooled  from 124 °c to 86 °c  is = -11343  joules


 calculation

heat(Q) = mass(m) x specific heat capacity(C) x  change  in temperature     (ΔT)

  where,

Q=? joules

M=150.0 g

C for steam = 1.99 j/g/°c

ΔT= 86°c-124°c = -38°c


Q  is therefore = 150.0 g x  1.99 j/g/°c   x -38°c =-11343 joules


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