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How many decays per second is in a curie?
Curie: A unit of radioactivity equal to 3.7 � 10^10 Disintegrations (decays) per second.
After 7 minutes a 53 g sample of plutonium decays to 36 g how long will it take for the sample to decay to 13 of its original amount?
It will take 25.0898 minutes, approx.
A sample of an unknown radioisotope exhibits 8540 decays per second After 350 minutes the number of decays has decreased to 1250 per second What is the half life?
The decay rate N at time t is N(t)=N(0) x 2^-(t/t_half), where t_half is the half life and N(0) is the decay rate at t=0. The ^ means "to the power of."You can solve this for t_half:t_half = - t / log_2(N(t)/N(0)) (log_2 means logarithm base 2)N(350 minutes)=1250, N(0)=8540. The rest is just finding a calculator to give you log_2 of 1250/8540.
Is it possible for a function that has a horizontal asymptote to attain the value of an asymptote?
Yes. Think of a function that starts at the origin, increases rapidly at first and then decays gradually to an asymptotic value of 0. It will have attained its asymptotic value at the start. For example, the Fisher F distribution, which is often used, in statistics, to test the significance of regression coefficients. Follow the link for more on the F distribution.
How many Becquerel equals a milligram?
There can be no equivalenece. A becquerel is the SI derived unit of radioactivity. It is defined as the activity of a quantity of radioactive material in which one nucleus decays per second. It is a measure in inverse second, s-1 and so has dimensions [T-1]. A milligram is a measure of mass, whose dimension is [M]. The two have different dimensions and according to basic principles of dimensional analysis, conversion from one to the other is not valid.
What particle is emitted when Pu 240 decays to U 236?
An alpha particle is emitted when Pu-240 decays to U-236. It consists of two protons and two neutrons and is commonly emitted in alpha decay processes.
What particle is emitted when P-32 decays to S-32?
When P-32 decays to S-32, a beta particle is emitted. This beta particle is an electron released during the conversion of a neutron into a proton within the nucleus of the atom.
What type of particle is emitted when a U-235 decays to Np-235?
It is negative beta particle emitted by a uranium nucleus and converting it to neptunium nucleus.
What kind of radiation is emitted when polonium decays to astatine?
When polonium decays to astatine, alpha radiation is emitted. This means that polonium releases an alpha particle, which consists of two protons and two neutrons, as it transforms into astatine.
When U-238 decays to th-234 what has been emitted?
An Alpha particle, and associated gamma radiation from the excited nucleus.
Which particle is emitted when an atom OF 85Kr spontaneously decays?
When an atom of 85Kr spontaneously decays, it emits a beta particle. This decay process involves the transformation of a neutron into a proton, with the emission of an electron and an antineutrino.
What type of particle is emitted when U-235 decays to Np-235?
An alpha particle is emitted when U-235 decays to Np-235. An alpha particle consists of 2 protons and 2 neutrons, and it has a positive charge.
What particle is emitted when Pt-190 decays to Os-186?
An alpha particle is emitted when Pt-190 decays to Os-186. An alpha particle has a mass number of 4, and an atomic number of 2. When Pt-190 decays to Os-186, the mass number drops by 4, showing that an alpha particle is emitted, along with energy. The other form of particle that could be emitted is a beta particle, which has a mass number of 0. The difference between 190 and 186 is 4, thus showing the emission of an alpha particle. Source: High School Chemistry class
What is emitted when potassium -40 decays?
Potassium-40 decays by emitting a beta particle, which is an electron. This decay process transforms potassium-40 into calcium-40.
What particle is emitted when Na-20 decays to Ne-20?
When Na-20 decays to Ne-20, it emits a beta-minus particle, which is essentially an electron. This is because in beta-minus decay, a neutron is converted into a proton, releasing an electron and an antineutrino.
What particle is emitted when Pu-240 decays to U-236?
240Pu decays to 236U by emitting an alpha particle. You can tell this by looking at the difference in atomic mass. 240 minus 236 is 4, and that is the mass of an alpha particle. You can also tell this by looking at a chart of the nuclides. See the related link below for an example from Brookhaven National Laboratories.
What is emitted from the nucleus during beta decay?
During beta decay, a neutron is converted into a proton, releasing an electron (beta particle) and an antineutrino from the nucleus. The beta particle is emitted as the neutron decays into a proton, increasing the atomic number of the nucleus.
