Uranium - 234 is radioactive and emits `alpha`-particles at what appears to be a constant rate.A sample of uranium - 234 of mass `2.64 mu G` is found to hae an activity of 604 Bq.
Calculate for the sample of Uranium -234
the half-life in years.

Uranium - 234 is radioactive and emits alpha -particles at what appears to be a constant rate.A sample of uranium - 234 of mass 2.64 mu G is found to hae an activity of 604 Bq. Calculate for the sample of Uranium -234 the decay constant

Uranium - 234 is radioactive and emits alpha -particles at what appears to be a constant rate.A sample of uranium - 234 of mass 2.64 mu G is found to hae an activity of 604 Bq. Calculate for the sample of Uranium -234 the number of nclei,

Strontium-90 is a radioactive isotope having a half-life of 28 years.Strontium-90 has a denstiy f 2.5 g cm^(-3) .A smaple of Strontium-90 has an activity of 6.4 xx 10^9 Bq .Calculate the mass of stronitium 90 in the sample

Strontium-90 is a radioactive isotope having a half-life of 28 years.Strontium-90 has a denstiy f 2.5 g cm^(-3) .A smaple of Strontium-90 has an activity of 6.4 xx 10^9 Bq .Calculate the volume of the sample.

In an experiment,the activity of 1.2 milligram(mg) of radioactive potassium chloride (chlroide of isotopeK_40) was found to be 170s^(-1) .Taking molar mass of K-40Cl to be 0.075 kg mole ^(-1),find the number of K-40 atoms in the sample and hence find the half-life of K-40 .Given ,Avogadro number =6.0 x 10^(23) mole^(-1).

The half-life of "_92^238U undergoing alpha decay is 4.5 xx 10^9 years. Calculate the activity of 10 g sample of "92^238U .

A radioactive isotope X with half-life of 693xx10^(9) years decay to Y which is stable. A sample of rock from of the moon was found to contain both the elements X Y in the mole ratio 1:7 . What is the age of the rock ? a) 2.079xx10^(12) years b) 1.94xx10^(10) years c) 1.33xx10^(9) years d) 10^(10) years

The half life of "_92^238U undergooing alpha today decay is 4.5 xx 10^9 years . Calculate the activity of 5 g sample of "_92^238U .

Half life of "_92^238U against alpha-decay is 4.5 xx 10^9 years. Calculate activity of 1 g of sample "_92^238U .

Radioactive disintegration is a first order reaction and its rate depends only upon the nature of nucleus and does not depend upon external factors like temperature and pressure. The rate of radioactive disintegration (Activity) is represented as -(dN)/(dt)=lambdaN Where lambda= decay constant, N= number of nuclei at time t, N_(0) =intial no. of nuclei. The above equation after integration can be represented as lambda=(2.303)/(t)log((N_(0))/(N)) Calculate the half-life period of a radioactive element which remains only 1//16 of its original amount in 4740 years: a) 1185 years b) 2370 years c) 52.5 years d) none of these