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
KonstantinChe [14]
3 years ago
12

Which phrase describes the decay modes and the half-lives of K-37 and K-42?

Chemistry
2 answers:
True [87]3 years ago
7 0
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

Among the choices the phrase describes the decay modes and the half-lives of K-37 and K-42 is different decay modes and different half-lives 
andrew11 [14]3 years ago
6 0

Answer: (3) different decay modes and different half-lives

Explanation: Potassium-37 and Potassium-42 have the same number of protons  but different numbers of neutrons i.e. they have same atomic number but different mass number. They are isotopes. Thus K-37 and K-42 have different decay modes

K-37 is positron decay and K-42 is beta decay.

_{19}^{37}{\textrm {Kr}}\rightarrow _{18}^{37}{\textrm {Ar}}+_{+1}^0{\textrm {e}}

_{19}^{42}{\textrm {Kr}}\rightarrow _{20}^{42}{\textrm {Ca}}+_{-1}^0{\textrm {e}}


K-37 has a half life of 1.23 seconds and K-42 has a half life of 12.4 hrs.

Thus they have different decay modes and different half lives.

You might be interested in
The following is a carbohydrates,lipid,protein or nucleic acid:Wax
Rasek [7]
A wax is a type of lipid. Waxes are nonpolar, so they are not soluble in water.
3 0
3 years ago
If you have 3cm of each<br> substance, which would<br> have the MOST MASS
lesantik [10]
The most mass is in my grandmas, because she a big lady. Respectfully.
5 0
3 years ago
How many atomospheres are in 710 mm Hg
timofeeve [1]

Answer:

0.934210526 atmospheres

Explanation:

5 0
3 years ago
Read 2 more answers
To which group does copper belong?
Aleksandr [31]

Answer:

d. Transition metal

Explanation:

Copper is in transition metal block in periodic table.

3 0
2 years ago
Read 2 more answers
Is the following nuclear equation balanced?<br><br> Yes or No.
Maru [420]

<em>Answer:</em>

  • No

<em>Reason: </em>

  • During a beta decay, one neutron convert into one proton and one electron. The proton remained in nucleus while electron move away known as beta radiation. So atomic mass will be remained same but atomic no will increase by one. So correct ans will be with 218, 86 Po and beta radiation.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Help me please, will give brainly
    14·2 answers
  • Calcium and water form calcium hydroxide and hydrogen gas also called what type of reaction
    13·1 answer
  • The value of Δ G ° ' for the conversion of glucose-6-phosphate to fructose-6-phosphate (F6P) is + 1.67 kJ/mol . If the concentra
    5·1 answer
  • Molecules that are similar enough to a neurotransmitter to bind to its receptor sites on a dendrite and block that neurotransmit
    10·1 answer
  • How can you distinguish a clastic sedimentary rock from a crystalline formed sedimentary rock?
    5·1 answer
  • Answer #4 and #5 make sure you have proof and will give brainliest
    12·2 answers
  • How much heat is required to raise the temperature of a 6.21 g sample of iron from 25.0 oC to 79.8 oC?
    11·1 answer
  • What is the type of reaction for the following: Silver nitrate + aluminum
    15·1 answer
  • Water molecules are highly _______ and are always _________.
    8·1 answer
  • An increase in blood CO2 or a decrease in blood ph will lead to which change in respiration?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!