What is the half-life of the isotope

Reference no: EM13540198

A radioactive isotope has an activity of 8.09 mCi. After 3.05 hours the activity is 6.31 mCi. What is the half-life of the isotope?
8.51 h

Need help on 2nd part

What is the activity after an additional 3.05 hours in mCi units?

Reference no: EM13540198

Questions Cloud

Wire is moving perpendicularly through a magnetic field : A wire is moving perpendicularly through a magnetic field of strength 0.100 T with speed 60.0 m/s. If the potential difference between the ends of the wire is 2.00 V, what is the length of the wire?

Reduce the time constraint in an RC circuit : Which of the following will reduce the time constraint in an RC circuit? a-Increasing voltage of the battery b-adding an additional resistor in parallel with the first resistor c-increasing the dielectric constant of the capacitor d-adding an additio..

Determine the final pressure and final temperature : A gas with a volume of 4.0 L is at a pressure of 1.0 atm at a temperature of 300 K. It is compressed adiabatically to a volume of 1.0 L. The gas has gamma = 1.4.

What are the initial and final temperatures of the gas : Two moles of an ideal diatomic gas have an initial pressure of 4.00 atm and initial volume of 16.0 L. The molecules in the gas can translate and rotate but not vibrate. The gas is compressed at constant pressure to a new volume of 8.00 L.

What is the half-life of the isotope : A radioactive isotope has an activity of 8.09 mCi. After 3.05 hours the activity is 6.31 mCi. What is the half-life of the isotope?

The age of a piece of wood from an archeological site : The age of a piece of wood from an archeological site is to be determined using the Carbon-14 method. The activity of the sample is measured to be 0.655 times the Carbon-14 activity of living plants. What is the age of the sample in years? (The half-..

What is the ground state energy of the electron : Take element Z = 70 from the periodic table. Ionize it 69 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron?

What is the radius of the electron orbit in hydrogen atom : Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 12 state? What is the energy of the Hydrogen atom when the electron is in the n = 3 state?

What is the de broglie wavelength of an object with a mass : What is the de Broglie wavelength of an object with a mass of 1.3 kg moving at a speed of 2.3 m/s? (Useful constant: h = 6.63×10-34 Js.)

User Account

All Pages