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# Answer to Question #21212 in Physical Chemistry for anni

Question #21212
A suspension of calcium carbonate particles in water flows through a pipe. Your assignment is to determine both the flow rate and the composition of this slurry. You proceed to collect the stream in a graduated cylinder for 1.00 min; you then weigh the cylinder, evaporate the collected water, and reweigh the cylinder. The following results are obtained:
Mass of empty cylinder: 65.0g
Mass of cylinder + collected slurry: 565g
Volume collected: 455mL
Mass of cylinder after evaporation: 215g
Calculate
(a) The volumetric flow rate and mass flow rate of the suspension.
(b) The density of the suspension.
(c) The mass fraction of CaCO3 in the suspension.
1
Expert's answer
2012-12-25T10:00:59-0500
(a) The volumetric flow rate
= 455 ml / min
The mass flow rate of the suspension
= (565-65= 500) = 500 g / min

(b) The density of the suspension
= 500 g / 455 ml
= 1.0989 g/ml ( 1.1)

(c) The mass fraction of CaCO3 in the suspension (mass of water is
the same that its volume 455 ml = 455 g )

w = (500-455) / 500 * 100% = 9 %

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#### Comments

Assignment Expert
11.05.16, 15:26

Dear visitor,
please use panel for submitting new questions

Miyelane
07.05.16, 21:49

a mixture of propane and butane is burned with pure oxygen. the combustion products contains 47.4 mole % H2O. After all the water is removed from the products,the residual gas contains 69.4 mole% CO2 and the balance O2.

a) write the balanced equations for this combustion reaction
b) calculate all the unknowns and what is the mole percent of propane in the fuel?

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