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Problem- Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A reading of 299 units was obtained for the intensity of the 671 nm red emission line. Then 1.00 mL of a 11.3 mM Lithium standard was added to 9.00 mL of serum, and this spiked serum gave an intensity reading of 731 units. What is the original concentration of Li in the serum?
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Using the data collected for part c on your data sheet and assuming the density of the vinegar is 1.00g/mL, 1) calculate the molar concentration of acetic acid (CH3COOH) in the vinegar sample using the average volume of NaOH.
Nitric oxide (NO) reacts instantly with oxygen gas to form nitrogen dioxide (NO2), a dark-brown gas. 2 NO(g) + O2(g) 2 NO2(g)
Compute the change in entropy for 0.5moles of an ideal gas with a temperature independent specific heat capacity of cp, m=2R that undergoes an irreversible change between each pair of states listed below.
Express you answer as a chemical equation. Identify all of the phases in your answer.
Discuss two ways that ammonium compounds decompose when they are heated. What chemical reaction is involved in the thermal decomposition of ammonium persulfate?
It is found that initial with pure A the volume after 12 min is increased by 70% at a pressure of 1.8 atm. If the similar reaction is to be carried out in a constant volume reactor and the initial pressure is 1.8 atm, compute the time required to ..
tetrafluoroethylene c2f4 can be converted to octafluorocyclobutane which can be used as a refrigerant or an aerosol
Question- The following reaction have the indicated equilibrium constants at a particular temp: N2(g) + O2 (g) ->(double arrow) 2NO(g) with a kc= 4.3 X 10^-252NO(g) +O2(g) ->(double arrow) 2NO2 (g) at a kc= 6.4 X10^9. Determine the value of the E..
What would be the effect of increasing the temperature on the following reaction? C2H2(g) + H2O(g) CH3CHO(g) DHrxn = -15 1 kJ 1. [CH3CHO] would increase
Determine the equivalent acid-base equilibrium that results when each of the following pairs of solutions is mixed. 25.0 mL of 0.50 M NaOH + 12.0 mL of 1.50 M HCl Pick two initial conditions from first four choices. Pick one choice from remaining ..
The vapor pressure of isopropyl alcohol at 25 C is 44 mmHg at sea level. Explain what is the vapor pressure at 25 C at 8555 ft
according to the following reaction how many moles of ethane c2h6 will be formed upon the complete reaction of 28.8
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