In naturally occurring potassium, 0.0117% of the nuclei are radioactive 40K. (a) What mass of 40K is

Question:

In naturally occurring potassium, 0.0117% of the nuclei are radioactive 40K.
(a) What mass of 40K is found in a broccoli stalk containing 300 mg of potassium?
(b) What is the activity of this broccoli stalk due to 40K?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Physics

ISBN: 978-0077339685

2nd edition

Authors: Alan Giambattista, Betty Richardson, Robert Richardson

See More Books

Question Posted: Jun 06, 2016 06:37 AM

See More Questions

40 K accounts for 0.0117% of naturally occurring potassium and potassium accounts for about 0.2% of the human body mass.Considering only the dominant decay of 40 K, which yields a -decay electron of...
In naturally occurring uranium atoms, 99.3% are 238U (atomic mass = 238 u, where u = 1.6605 10-27 kg) and only 0.7% are 235U (atomic mass = 235 u). Uranium-fueled reactors require an enhanced...
Carvacrol is a naturally occurring substance isolated from oregano, thyme, and marjoram. What is its IUPAC name? C Carvacrol CC. "CH
M1 is a way to measure... a) the level of bank reserves b) a country's money supply c) the level of savings in a country d) a country's economic potential
What is the difference between a multinational enterprise (MNE) and a small and medium-sized enterprise (SME)?
Individually or as a group with your classmates, interview the manager of a retail (or wholesale) store such as a music store, an automobile parts store, or the parts department of an appliance...
Stats teachers cars A random sample of AP Statistics teachers was asked to report the age (in years) and mileage of their primary vehicles. A scatterplot of the data, a least-squares regression...
Likewise, effective strategic leadership requires a thorough knowledge of the organization that youre trying to lead, including its strengths and weaknesses. What appear to be the organizational...
show work please An older home had a new roof installed about 15 years ago. However, many of the homes in the neighborhood have new roofs. A roofing contractor estimated the cost of a new roof to be...
Suppose that the burning times of electric light bulbs approximate a normal curve with a mean of 1200 hours and a standard deviation of 120 hours. What proportion of lights burn for (a) Less than 960...
A space rock contains 3.00 g of 14762Sm and 0.150 g of 14360Nd. 14762Sm a decays to 14360Nd with a half-life of 1.06 1011 yr. If the rock originally contained no 14360Nd, how old is it?
The power supply for a pacemaker is a small amount of radioactive 238Pu. This nuclide decays by a decay with a half-life of 86 yr. The pacemaker is typically replaced every 10.0 yr. (a) By what...
The following questions relate to the auditor's responsibility when associated with comparative financial statements. Select the best response. a When financial statements of a prior period are...
Carol's Cupcakes has grown from a home business into a one of the largest event and wedding catering companies in the area. Its founder, Carol Thompson, first dreamed of owning her own company while...
Many things have changed for businesses in 2022. The previous 2 business years of 2020 and 2021 have tested businesses and the workforce like nothing else. Not only were profits reduced, and...
1) Virginia Tech's motto is "Ut Prosim" which means 'That I May Serve'. Share how you contribute to a community that is important to you. How long have you been involved? What have you learned and...
Person Is Arianna Grande Answer all questions Who are they? How successful are they? Why would companies be interested in partnering with them? Identify one company from their industry that you feel...
Imagine you have just retired after a long and very successful career (as a physiotherapist). Congratulations! You've made such an impact in the world that business and community leaders from around...
Your prior beliefs about a quantity are such that A random sample of size 25 is taken from an N(, 1) distribution and the mean of the observations is observed to be 0.33. Find a 95% HDR for . p(0) =...
Three forces with magnitudes of 70pounds, 40 pounds, and 60 pounds act on an object at angles of 30, 45, and 135, respectively, with the positive x-axis. Find the direction and magnitude of the...
A sample of technetium-104, which has a half-lfe of 18.0 min, has an initial activity of 10.0 mCi. Determine the activity of the sample after exactly 1 h has elapsed.
Calculate the time required for a sample of radioactive tritium to lose of its activity. (Tritium has a half-life of 12.3 years.)
131I is given to a patient for use in a diagnostic procedure on her thyroid. What percentage of the 131I sample remains after exactly one day, assuming that all of the 131I is retained in the...
business law A partner may actively compete with the partnership True False
A company provided the following data: Selling price per unit $80 Variable cost per unit $45 Total fixed costs $490,000 How many units must be sold to earn a profit of $122,500?
Suppose a 10-year, 10%, semiannual coupon bond with a par value of $1,000 is currently selling for $1,365.20, producing a nominal yield to maturity of 7.5%. However, it can be called after 4 years...

In naturally occurring potassium, 0.0117% of the nuclei are radioactive 40K. (a) What mass of 40K is

Question:

Step by Step Answer:

a Use the percent abundance of potassium40 in the potassium in the ...View the full answer

Physics

Students also viewed these Mechanics questions