User Account

All Pages

Activity of a certain isotope

Assignment Help Chemistry
Reference no: EM131430377

The activity of a certain isotope dropped from 3200 Ci to 800 Ci in 12.0 years.

What is the half-life of this isotope (in years)?

How many half lives have elasped in a sample with a half life of 2 hours after 18 hours?

Calculate the number of half lives that elapse after 18 hours if a sample has a half life of 2 hours.For the nuclear reaction described in the following question, give the chemical symbol and mass number of the missing product. 

The beta decay of Y-90 yields a beta particle and _____________.

Reference no: EM131430377

Questions Cloud

Determine the mass of the gas : A sample of xenon gas is maintained at 420 torr and 45oC occupies a volume of 420 mL. Determine the mass of the gas. (Molecular mass of xenon = 131.29 g/mol.)
How would you determine the productivity of the production : Mgmt410: How would you determine the productivity of the production process at Frito-Lay?How are the ten decisions of OM different when applied by the Operations manager of a production process such as Frito-Lay versus a service organization such..
Executives have a lot of responsibility : Executives have a lot of responsibility, both direct and indirect. What types of fiduciary responsibilities do they have and in what ways should the compensation reflect this?
How your marketing efforts and marketing mix will change : Develop a presentation that includes: Describe how your marketing efforts and marketing mix will change with each phase in the product life cycle and Explain how the packaging you will use for your product or service will add value
Activity of a certain isotope : The activity of a certain isotope dropped from 3200 Ci to 800 Ci in 12.0 years. What is the half-life of this isotope (in years)? How many half lives have elasped in a sample with a half life of 2 hours after 18 hours?
What is the average rate of reaction : 1. Over the First 5.0 seconds, the [I-] fell from ) 0.955 M to 0.705 M. What is the average rate of reaction over the 5.0 seconds? 2. Determine the predicted rate of change of [H+] in this 5.0 s of reaction?
What is meant by accelerating the process : What is meant by "accelerating the process?" Developing a pool of concepts to serve as candidates for new products is the __________ stage of the new-product process
What are the objectives achieved by effective clinical teams : According to the textbook, there are five factors that influence the continuation of separation of clinical and administrative to be part of professional bureaucracy in healthcare delivery. Which one do you find the most affecting factor? Explai..
Distillation tower can separate oil into different fractions : Why do you think a distillation tower can separate oil into different fractions, while we can't separate seawater into its various fractions in the same way?

Reviews

Write a Review

 

Chemistry Questions & Answers

  Henderson-hasselbalch equation

Hydronium ion concentration using Henderson-Hasselbalch equation - What is the hydronium ion concentration of a solution

  State the balance equation for the reaction and compute

State the balance equation for the reaction and compute the enthalpy change for this reaction (in kJ/mol) if the temperature of the solution increases from 22.2 degrees C to 44.8 degrees C

  Explain a method by which the two compounds

You have a solution of NaCl dissolved in water. Describle a method by which these two compounds could be separated.

  Evaluate the number of atp molecules

Calculate the number of ATP molecules that are produced from the biological oxidation of one molecule of each of the following to CO2 and H2O

  Explain the redox reaction of peroxydisulfate with iodide

The redox reaction of peroxydisulfate with iodide has been used for many years as part of the iodine clock reaction which introduces students to kinetics. If Eºcell = 1.587 V and Eº of the anode half-cell is 0.536 V, what is Eº of the cathode half..

  Explain sodium ions are found in the extraellular fluid

Sodium ions are found int eh extraellular fluid in a concentration of 150mM. How many grams per liter is this?

  State atoms are spheres in contact along the face diagonal

Assuming that the atoms are spheres in contact along the face diagonal, what is the radius of a Ar atom (in Angstroms)? An angstrom = 10-10 m or 10-8 cm.

  Explain what is the initial voltage of the battery

A battery is constructed based on the oxidation of magnesium and the reduction of . The initial concentrations of and are 1.1×10-4 M and 1.6 M , respectively, in 1.0-liter half-cells

  Explain carboxylic acid is burned in oxygen

A 0.4600 g sample of carboxylic acid is burned in oxygen, producing 0.8202 g of CO2 and 0.3377 g of H20. Determine the empirical formula of the carboxylic acid.

  Explain the silver metal reacting with the oxygen in the air

a badly tarnished silver teapot. The tarnish is a result of the silver metal reacting with the oxygen in the air according to

  How many milliliters of .45m hydrochloric acid must be added

how many milliliters of .45M hydrochloric acid must be added to 25.0 mL of 1.00 M potassium hydroxide to make a neutral solution?

  Explain what is the ionization energy of the atom

A series of lines in the spectrum of atomic hydrogen lies at 656.46 nm, 486.27 nm, 434.17 nm, and 410.29 nm. Explain what is the wavelength of the next line in the series. Explain what is the ionization energy of the atom when it is in the lower..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd