Explain what is the half-life of ba-137m

Assignment Help Chemistry

Reference no: EM13680975

The activity of a sample of Ba-137m has reduced by 75% from its initial activity after 5.10 minutes. Explain what is the half-life of Ba-137m? Explain what fraction of activity remains after 6.25 minutes? (A=Aoe (-kt); k = .693/t1/2)

Reference no: EM13680975

Questions Cloud

Explain how many atoms of potassium-40 : Potassium-40 has a natural abundance of 0.0118%. Explain how many atoms of potassium-40 are present in a 1.35 g sample of KCl

Explain what is the rf value : Subsequent to running the experiment developing and drying, a spot was observed at 4.96 cm from the bottom of the plate as well as the solvent front was 7.38 cm from the bottom of the plate. Explain what is the Rf value

Explain what is the freezing point of 50 percent by weight : Explain what is the freezing point of 50 percent by weight solution of ethylene glycol, C12H6O2 in water (anitfreeze) Mol. Wt. of ethylene glycol is 62.0 g/mol. State what 50 percent ethylene glycol means to get the masses to use

Define why actate concentrations build up : The antibiotic oligomycin B blocks proton transport trough Fo. Define why actate concentrations build up in rats that have been treated with oligomycin B.

Explain what is the half-life of ba-137m : Explain what is the half-life of Ba-137m. Explain what fraction of activity remains after 6.25 minutes? (A=Aoe (-kt); k = .693/t1/2)

Explain what factor the initial rate : If a reaction is second order in hydroxide ion by explain what factor the initial rate would change if the concentration of OH- was doubled

Explain what are the concentrations of benzoic acid : Explain what are the concentrations of benzoic acid as well as benzoate if a solution containing 0.2 mM benzoic acid is adjusted at pH 7.2

Explain what is the rate mol/ls for 25ml (nh2)2s2o8 : Explain what is the rate mol/ls for 25ml (NH2)2S2O8 (ammonium persulfate) with reaction time of 3.49s and .1L total volume

Neutralization of a sample of a sulfuric acid solution : Neutralization of a 30.00mL sample of a sulfuric acid solution needed 40.33mL of 0.3870 M sodium hydroxide. Explain what is the concentration of the original sulfuric acid solution

User Account

All Pages