This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Naturally radioactive nuclei can decay spontaneously by emitting the following particles: a. helium ... (Read 130 times)

leilurhhh

  • Hero Member
  • *****
  • Posts: 560
on: Jul 28, 2018
Naturally radioactive nuclei can decay spontaneously by emitting the following particles:
 a. helium nuclei, electrons, photons
  b. electrons, neutrons, protons
  c. helium nuclei, electrons, protons
  d. electrons, neutrons, photons
  e. quarks and leptons

Question 2

How many radioactive atoms are present in a sample that has an activity of 0.5 mCi and a half-life of 10 years? (1 curie = 3.7  1010 decays/s)
 a. 9.5  1012 atoms
  b. 8.4  1012 atoms
  c. 7.3  1012 atoms
  d. 6.5  1012 atoms
  e. 2.7  105 atoms


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

robbielu01

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

B


leilurhhh

  • Member
  • Posts: 560
Reply 2 on: Jul 28, 2018
:D TYSM

dyrone

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Figure 7.1 shows the rapid decline in the trust of Americans in government since the 1960s. This de Figure 7.1 shows the rapid decline in the trust of Americans in government since the 1960s. This de
This battery-powered tester uses light-emitting diodes (LEDs), meter lead terminals, and two small ... This battery-powered tester uses light-emitting diodes (LEDs), meter lead terminals, and two small ...
A PET scan, a medical use for radioactive isotopes. A PET scan, a medical use for radioactive isotopes.
Environmental Monitoring (EM) - viable air particles (Volumetric) Environmental Monitoring (EM) - viable air particles (Volumetric)
Characteristics of Subatomic Particles Characteristics of Subatomic Particles
A balloon filled with helium gas at 20°C occupies 2.91 L at 1.00 atm. The balloon is immersed ... A balloon filled with helium gas at 20°C occupies 2.91 L at 1.00 atm. The balloon is immersed ...
Video: Neurotransmission at chemical synapses & Excitory and inhibitory potentials

For a complete list of videos, visit our video library