User Account

All Pages

Commonly used unit for measuring nuclear radioactivity

Assignment Help Chemical Engineering
Reference no: EM13885609

The curie (Ci) is a commonly used unit for measuring nuclear radioactivity: 1 curie of radiation is equal to decay events per second (the number of decay events from 1 g of radium in 1 s). a. What mass of Na2 38SO4 has an activity of 10.0 mCi? Sulfur- 38 has an atomic mass of 38.0 and a half-life of 2.87 h. b. How long does it take for 99.99% of a sample of sulfur-38 to decay?

Reference no: EM13885609

Questions Cloud

Question regarding the radioactive copper : Radioactive copper-64 decays with a half-life of 12.8 days. a. What is the value of k in s^-1? b. A sample contains 28.0 mg 64Cu. How many decay events will be produced in the first second?
What is a case study research design : Using mail-out surveys, how do you collect better data and increase return rates and How do researchers overcome the problems in correlational field research?
What are the issues that concern doing more with less : What are the issues that concern doing more with less - what actions are you taking to address these problems?
Record the amount of federal income taxes using the wage : Record the amount of federal income taxes using the wage-bracket method.
Commonly used unit for measuring nuclear radioactivity : The curie (Ci) is a commonly used unit for measuring nuclear radioactivity: 1 curie of radiation is equal to decay events per second (the number of decay events from 1 g of radium in 1 s).
When do you need to gather data at different levels : Why is it important to use not only subjective but also hard data in correlational field studies and Why is it important to use different sources, not same-source data, in correlational field studies?
Express system matrix equations of motion in parametric form : Draw the free body diagrams and express the system matrix equations of motion in parametric form for the system and calculate one Frequency Response Function in Inertance form and plot (linear and log (dB)) in the frequency range of interest using M..
Prepare a total compensation package for jill smith : For the purpose of this assignment, you will prepare a total compensation package for Jill Smith for one of the two countries (your choice)
Patient with thyroid disease : If a patient with thyroid disease consumes a sample of Na131I containing 10 of 131I, how long will it take for the amount of 131I to decrease to of the original amount?

Reviews

Write a Review

Chemical Engineering Questions & Answers

  Choice of design pressure and temperature

The thermal design of a heat exchanger to recover heat from a kerosene stream by transfer to a crude oil stream was carried out in. Make a preliminary mechanical design for this exchanger. Base your design on the specification obtained from the CA..

  Nuclear synthesis of this cobalt isotope

Radioactive cobalt-60 is used to study defects in vitamin B12 absorption because cobalt is the metallic atom at the center of the vitamin B12 molecule. The nuclear synthesis of this cobalt isotope involves a three-step process. The overall reactio..

  Composition of the vapor-air mixture

In the storage of flammable liquids, if the composition of the vapor-air mixture above the liquid surface falls within the flammability limits, a floating roof tank would need to used or the tank blanketed with inert gas. Check if the vapor compos..

  Question 1a the radiation protection act 2003 makes

question 1a the radiation protection act 2003 makes provisions for the protection of people against the risks from

  Develop the designed circuit using breadboard

Explain in detail the working of the instrument. Description should include neat diagram, principle of working and the source of literature.

  Elementary second order adiabatic reaction

An elementary second order adiabatic reaction A+ B CD ? + is taking place in a CSTR. The feed to the reactor is equimolar A and B at concentrations of 2.4 mol/liter. The entering temperature is 300 K.

  Question 1what are the two main types of industrial

question 1what are the two main types of industrial ventilation which are used to control airborne contaminants in a

  Bed of solids on the belt fluidize

The solid particles have average diameter 3 mm and piece density 730 kg/m3. Hot air at 150 ºC is blown up through the dryer belt at a volumetric flow rate of 7200 m3 /hr per m2 of belt area. Will the bed of solids on the belt fluidize?

  Concentration of original hydrochloric acid solution

A 25.00-mL sample of hydrochloric acid solution requires 24.16 mL of 0.106 M sodium hydroxide for complete neutralization. What is the concentration of the original hydrochloric acid solution?

  Process principles assignment production of

process principles assignment production of formaldehydeworld formaldehyde production is estimated to be about 8

  Question 1a discuss in details on five types of health

question 1a discuss in details on five types of health effects related to exposure to hazardous substances encountered

  Energy of combustion of acetylene

b. A 12.6-g sample of acetylene, C2H2, produced a temperature increase of 16.9C in the same calorimeter. What is the energy of combustion of acetylene (in kJ/mol)?

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