1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ira [324]
3 years ago
11

To what element does Thorium-230 (atomic number-90) decay when it emits an alpha particle (42He)? a. 22688Ra c. 22886Rn b. 23090

Ra d. 22286Rn
Biology
1 answer:
abruzzese [7]3 years ago
5 0

Answer:

Option A

Explanation:

Thorium-230 decays to Radium-226 also emitting an \alpha  particle.

<u><em>The reaction is as follows:</em></u>

^{230}Th   =>   ^{226} Ra + ^{4} He (Alpha-particle)

You might be interested in
20. What is the difference between adaptation<br> and evolution?
Artemon [7]

Answer:

Adaptation is the process of adjusting something to better match its environment or situation. Evolution is a broad term that refers to any change in anything over time.

4 0
3 years ago
Read 2 more answers
Why do all life forms require a constant supply of usable energy?
oksian1 [2.3K]
To exist we must carry on metablolic processes at all times to ensure the proper function of all our cells, tissues, organs, and systems. 

Hope this helped! :)
3 0
3 years ago
Which of the following is an example of episodic memory? (It is not C)
pantera1 [17]
An episodic memory is a unique memory. it can be such as your first kiss or something small that means a lot to you. I believe the answer is D.
8 0
4 years ago
Read 2 more answers
Which type of skeletons do invertebrates such as crabs have?
jeka94
Answer: Exoskeleton

This is the answer to your question, hope it helps!
3 0
4 years ago
Which type of air mass is most likely to form over north dakota
Tatiana [17]
An air mass bringing dry, frigid winds to North Dakota
3 0
3 years ago
Read 2 more answers
Other questions:
  • Another classification of blood group antigens is known as MN. Individuals are either homozygous for M (MM) or N (NN), or they e
    10·1 answer
  • A scientist hypothesizes that the water in all of the Earth's oceans is connected. What would most likely allow this hypothesis
    8·1 answer
  • What cells in the body respond to glucagon by breaking down glycogen and releasing glucose? View available hint(s) what cells in
    15·1 answer
  • Describe two situations in which a healthy aphid population would start to experience negative population growth.
    12·1 answer
  • How do I adjust my model based off of fossil information?
    11·1 answer
  • Why is cell transport important
    8·1 answer
  • what is the function of Placenta? During which stage is it completely formed? &amp;How will the fetus body temperature be regula
    13·1 answer
  • Question 4 of 5
    5·1 answer
  • .....................................................
    7·2 answers
  • The image below shows several different organisms that have the ability to fly. All of these organisms have adapted to similar e
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!