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- A student obtained an average PV value of 42,000 in column ( of the data table. If the syringe had een able to be adjusted to a volume of 35.0 mL, what would the pressure be inside the flask? emember that PV = k and the volume you used includes the flask as well as the syringe. Given that the volume of the flask and the syringe is 553. Round to the correct sig figs.Determination of Total Chlorine Residual Description of the MethodThe chlorination of a public water supply produces several chlorinecontaining species, the combined concentration of which is called the total chlorine residual. Chlorine is present in a variety of chemical states, including the free residual chlorine, which consists of Cl2, HOCl and OCl–, and the combined chlorine residual, which consists of NH2Cl, NHCl2, and NCl3. The total chlorine residual is determined by using the oxidizing power of chlorine to convert I– to I3-. The amount of I3- formed is then determined by titrating with Na2S2O3 using starch as an indicator. Regardless of its form, the total chlorine residual is reported as if Cl2 is the only source of chlorine, and is reported as mg Cl/L. The description here is based on Method 4500-Cl B as published in Standard Methods for the Examination of Water and Wastewater, 20th Ed., American Public Health Association: Washington, D. C., 1998 ProcedureSelect a volume of…Determination of Total Chlorine Residual Description of the MethodThe chlorination of a public water supply produces several chlorinecontaining species, the combined concentration of which is called the total chlorine residual. Chlorine is present in a variety of chemical states, including the free residual chlorine, which consists of Cl2, HOCl and OCl–, and the combined chlorine residual, which consists of NH2Cl, NHCl2, and NCl3. The total chlorine residual is determined by using the oxidizing power of chlorine to convert I– to I3-. The amount of I3- formed is then determined by titrating with Na2S2O3 using starch as an indicator. Regardless of its form, the total chlorine residual is reported as if Cl2 is the only source of chlorine, and is reported as mg Cl/L. The description here is based on Method 4500-Cl B as published in Standard Methods for the Examination of Water and Wastewater, 20th Ed., American Public Health Association: Washington, D. C., 1998 ProcedureSelect a volume of…
- Determination of Total Chlorine Residual Description of the MethodThe chlorination of a public water supply produces several chlorinecontaining species, the combined concentration of which is called the total chlorine residual. Chlorine is present in a variety of chemical states, including the free residual chlorine, which consists of Cl2, HOCl and OCl–, and the combined chlorine residual, which consists of NH2Cl, NHCl2, and NCl3. The total chlorine residual is determined by using the oxidizing power of chlorine to convert I– to I3-. The amount of I3- formed is then determined by titrating with Na2S2O3 using starch as an indicator. Regardless of its form, the total chlorine residual is reported as if Cl2 is the only source of chlorine, and is reported as mg Cl/L. The description here is based on Method 4500-Cl B as published in Standard Methods for the Examination of Water and Wastewater, 20th Ed., American Public Health Association: Washington, D. C., 1998 ProcedureSelect a volume of…In a study of the gas phase decomposition of dinitrogen pentoxide at 335 K N,O;(g2 NO,(g) + % O2(g) the concentration of N2Og was followed as a function of time. It was found that a graph of In[N2O3] versus time in seconds gave a straight line with a slope of -6.96x10-3 s1 and a y-intercept of -1.41. Based on this plot, the reaction is order in N2Og and the rate constant for the reaction is s-!.When we analyze the Uniformity of Dosage Units (content uniformity) in compressed tablets during PPQ, should we use the same or different methodology and acceptance criteria as those described in respective USP monograph (905) that is used for CU evaluation of routine product batches? Please explain.
- Analyte may be lost at the ashing stage volatile hydride generated by the reaction that occurs is swept into the atomization chamber by an inert gas, where it undergoes decomposition. detection limits by a factor of 10 to 100 compared to alternative methods v limited to only the determination of mercury.O 15 Ppm 2. In a certain polluted area, the partial pressure of NO gas was 8 pascal. The mixing ratio of NO is . ppmv (assume normal conditions) 3. A 500 kg sample of a fertilizer containing 115 ppms Cu was mixed with 15,000 kg soil which also contains 2.0 ppms Cu. The final level of Cu is ........ pPpms 4. The mixing ratio of H,S gas is 0.2 ppmv and the total flux into atmosphere is 2.5x10" kg Estimate r for H;S. ....kg (assume normal conditions and volume of atmosphere 4.0x10" m)148409766/materials/gp/2496058638 (5) Practice Dashb... Desmos | Graphing... Q Learn: English voca. gy - final assessment.docx ab 2 /2 > 157% 5. Calculate AH for the reaction N2H4 (1) + O2 (g) - N2 (g) + 2 H20 (I) given the following data: 2 NH3(g) + 3 N;O(g) ----> 4 N2(g) + 3 H2O(1) AH° = -1010. kJ N2O(g) + 3 H2(g) ----> N2H¾(1) + H2O(I) AH° = -317 kJ 2 NH3(g) + 1/2 O2(g) ----> N2H4(1) + H¿O(1) AH° = -143 kJ H2(g) + 1/2 O2(g) ----> H2O(1) AH° = -286 k) ** Be sure to show all of your manipulated equations. rr Sign out
- (a) Water in vadose zone contains chlorobenzene of concentration 40 mg/L. What is the equilibrium concentration soil air in contact with this solution? (b) An aquifer with porosity 0.3 has distribution coefficient of TCE as 100 L/kg. What fraction of TCE is in aqueous phase and sorbed phase of the soil?In the synthesis of hydrocarbons, the carbon source is carbon dioxide. Although the CO2 concentra?on in the atmosphere raises at a drama?c speed, point sources are probably the easier sources for a PtX process. Iden?fy 3 possible point sources, explain why CO2 is formed and what challenges each of the three CO2 streams presentsSci-Hub | Artificial Intelliger X n Dashboard n Course: Basic Chemistry for x BCBS_Supplementary Exerci X BCBS_Chapter 7_Chemical https://soul2.hkuspace.hku.hk/pluginfile.php/3164727/mod_resource/content/1/BCBS_Supplementary%20... Q * rw 之4 マ縮園 Q清除 | 6. Consider the following reaction: 2SO2(g) + O2(g) Time 2SO3(g) 1.00 mole of SO2(g) and 0.500 mole of O2(g) are mixed in a 1.00 dm³ container at constant librium constant, Ke, for the temperature. When equilibrium is attained, 98.0% of the SO2(g) is converted to SO3(g). What is the equilibrium constant, Ke, for the reaction at the temperature of the experiment? A. 4.80 × 10² dm’ mol B. 4.09 × 10' dm³ mol C. 5.55 × 10³ dm³ D. 2.40 x 10° dm° mol wing equilibrium system: 2HI(g) (Kc = 50.0) mol¯1 ue of Ke for the following H2(g) + I½(g) д