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Problem- An aliquot of a solution containing a pure beta particle emitter is counted in a liquid- scintillation counter, while an equal aliquot is evaporated and counted with a thin window G-M counter. The observed background-corrected counting rates were 5835 ± 70 cpm and 32020 ± 215 cpm.
1) Which detector is associated with each counting rate and why do they differ?
I need expert help to solve the above question
A tank utilized for storing liquefied natural gas (LNG) must be taken out of service as well as inspected. All the LNG that can be pumped out of the tank is removed. The tank then warms from its service temperature (~-200°F) to ambient temperature..
Rank the following elements in order of increasing ionization energy and increasing atomic size: P, O, S.
Using standard reduction potentials from your textbook, calculate the delta G for the oxidation of ethanol using NAD+ as the oxidizing agent. It would even be helpful if someone could just give me the reduction potential
molarity of acetic acid in a 15ml sample of vinegar that requires 22.7 ml of 0.550M solution of NaOH to reach neutralization point
0.554g sample that is a mixture of oxalic acid, H2C2O4 and another solid that does not react with sodium hydroxide. If 29.58 mL of 0.550 M NaOH is required to titrate the oxalic acid in the 0.554g sample to the equivalence point
what is the concentration of oygen dissolved in water at 20 degrees celsuis in equilibrium with a gas mixture at 0.81 atm.
The density of magnesium is 1.7 g/cm3, and the density of iron is 7.9 g/cm3. Consider a block of iron with a mass of 819 g. What is the mass of a block of magnesium that has the same volume as the block of iron
Ammonia is kept at 15°C in a 10.0L flask with a pressure of 1.95 atm. What is the pressure in the flask if the temperature is increased to 25°C
A pair of enantiomers is named below. For each stereoisomers, draw the structure. Be sure to specify the stereochemistry via wedge-and-dash bonds.
A mixture of 1.374 g of H2 and 70.31 g of Br2 is heated in a 2.00-L vessel at 700 K. These substances react as follows: H2 (g) + Br2 (g) ⇔ 2HBr (g) Compute the equilibrium concentrations of H2,Br2, and HBr.
Explain briefly that how HCl could test for limestone's presence , use the balanced chemical equation for this and then describe specific reaction that takes place?
Discuss the symmetry of cyclohexane chair conformation, half chair conformation, and boat conformation.
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