« previous next »

Author Question: The half-life of radon-222 is 3.83 d. If a sample of radon initially contains 6.00 108 radon atoms, ... (Read 114 times)

lidoalex

  • Hero Member
  • *****
  • Posts: 538
on: Jul 29, 2018
The half-life of radon-222 is 3.83 d. If a sample of radon initially contains 6.00  108 radon atoms, how many of them are left after 10.0 d?
 
  A) 9.82  107
  B) 7.67  107
  C) 8.34  108
  D) 7.29  108
  E) 8.56  108

Question 2

The speed of sound varies with
 
  A) loudness.
  B) frequency.
  C) wavelength.
  D) all of the above
  E) none of the above


Ahnyah

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

Answer: E


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Dimensions of quality of life affected by cancer Dimensions of quality of life affected by cancer
Healthy eating is a way of life Healthy eating is a way of life
Atoms and Elements Atoms and Elements
The decay constant of radon-222 is 0.181 d-1. If a sample of radon initially contains 6.00 × ... The decay constant of radon-222 is 0.181 d-1. If a sample of radon initially contains 6.00 × ...
A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ... A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ...
Complete Life cycle of cherry (Prunus), a eudicot Complete Life cycle of cherry (Prunus), a eudicot
Video: X chromosome inactivation in calico cats

For a complete list of videos, visit our video library