The half-life of 235U, an alpha emitter, is 7.1×1087.1×108 yr.
Calculate the number of alpha particles emitted by 9.0 mg of this nuclide in 1 minute
someone please help
The half-life of 235U, an alpha emitter, is 7.1×1087.1×108 yr. Calculate the number of alpha particles...
The half-life of 235U, an alpha emitter, is 7.1×108 yr. Part A Calculate the number of alpha particles emitted by 3.4 mg of this nuclide in 3 minutes. Express your answer using two significant figures. TIME GIVEN IS 3 MINUTES
Calculate the number of alpha particles emitted by 3.9 mg of this nuclide in 4 minutes ? The half-life of 235U, an alpha emitter, is 7.1×108 yr.
1. Polonium-209, an α emitter, has a half-life of 102 years. How many α particles are emitted in 1.5 s from a 1.2 ng sample of 209Po? 2. A 1.0 mg sample of 126Sn decays initially at a rate of 4.6×105 disintegrations/s. What is the half-life of 126Sn in years?
The half-life of 14C is 5730 yr. Find the number of disintegrations emitted by 1.0 mol of 14C in 1 minute. (Note: 1 year = 365.24 day). Express your answer using two significant figures.
Polonium-208 is an alpha emitter with a half-life of 2.90 years. How many milligrams of polonium from an original sample of 5.00 mg will remain after 8.00 years?
A sample of 9.0×109 atoms that decay by alpha emission has a half-life of 90 min. How many alpha particles are emitted between t=50min and t=200min? Express your answer using two significant figures.
The half-life of a sample of 1011 atoms that decay by alpha particle emission is 10 min?How many alpha particles are emitted in the time interval from 10 min to 100 min? please help me and show work as fast as possible
The natural radioactive decay of 235U is by Alpha emission with a half-life of 704 Million years. Remember that an Alpha particle consists of two protons and two neutrons. What is the radiogenic daughter isotope produced by this decay? 231U 231Th 235Th 238U 206Pb 2. The half-life for the decay of 222Rn gas is about 3.8 days. If we started with one mole of 222Rn gas, how many days (to the nearest 1/10th of a day) would it take until...
alpha decay tne menes valy widuery, Wnclcer the emitted alpha particles vary little (3 marks) The following expression holds for the half-life of an alpha emitter: (b) where C and D are (approximately) constant and D4 if Ea is in units of MeV Use this formula to calcuiate the ratio of the half-lives of Ra (a 5.685 MeV) and Ra (Ea 7.453 MeV). Compare your result with the ratio of the experimentally observed half-lives for 3 Ra (r 3.66 days)...
The half-life of 238U is 4.5×109 yr. Find the number of disintegrations per hour emitted by 1.0 mol of 238U. (Note: 1 year = 365.24 days).