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Carbon 14, 14 6 C is a radioactive isotope of carbon that has a half-life of 5730 years. If an initial sample contained 100014C nuclei, how many would still be around after 22,920 years?
A rigid container has water of 2 kg at 120 C with a quality of 25%. The container is heated to the temperature of 140 Celsius, calculate the new quality?
Explain the Integral and Differential method of analysis for finding the rate of reaction.(May-2005)2.For the elementary reaction in series Ak1Rk2S if k1= k2and at t = 0, CA= CAoandCRo= CSo= 0, find the maximum concentration of R.
6. Famous New Zealand scientist Ernest Rutherford was awarded a Nobel Prize in which field? 7. What is the chemical symbol for gold? 8. K is the chemical symbol for which element?
what percent of the maximum allowable flow rate is being used
A mixture contains only NaCl and Fe(NO3)3. A 0.456-g sample of the mixture is dissolved in water, and an excess of NaOH is added, producing a precipitate of Fe(OH)3. The precipitate is filtered, dried, and weighed. Its mass is 0.107 g.
The following two reactions take place in a gas phase reactor at 3000 K and 1 atmosphere pressure: 2CO2(g) 2CO(g) + O2(g) Keq.1071 O2(g) + N2(g) 2NO(g) Keq.01493
Discuss the characteristics of this microenvironment.
Write four balanced equations for this system. Identify where any constitutive equations may be required for the modelling processes.
A first order reaction requires two equal sized CSTR. The conversion is 1. more when they are connected in series. 2. less when they are connected in series.
The slurry effluent from the reactor (digester), consisting of solid inert material from the ore and an aqueous solution of aluminum sulfate is then fed to a three-stage, countercurrent washing unit to separate the aqueous aluminum sulfate from th..
Two equilibrium stages at 25C are used as shown in the following diagram. If 300 kg H2O/h is fed to each extraction unit, what fraction of the acetone in the feed solution would be removed and what would be the composition of the combined extract?
Describe the advantages and disadvantages of using taxes and bounties to regulate negative externalities.
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