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
Archy [21]
3 years ago
9

Positrons are spontaneously emitted from the nuclei of

Chemistry
2 answers:
Fudgin [204]3 years ago
6 0

Answer: Option (1) is the correct answer.

Explanation:

  • A positron is a small particle which contains a +1 charge and its mass is equal to the mass of an electron, that is, 9.109 \times 10^{-31} kg.

A positron is represent by the symbol ^{0}_{+1}\beta.

For example, ^{37}_{19}K \rightarrow ^{37}_{18}Ar + ^{0}_{+1}\beta

  • Whereas nitrogen-16 does not decay to give a positron because nitrogen-16 is the daughter isotope formed due to decay of oxygen-16.

The decay reaction is as follows.

           ^{16}_{8}O \rightarrow ^{16}_{7}N + ^{0}_{+1}\beta

  • And, on radioactive decay of thorium-232 there will be formation of radium-228 along with emission of an alpha particle.

The reaction will be as follows.

            ^{232}_{90}Th \rightarrow ^{228}_{88}Ra + ^{4}_{2}\alpha

Therefore, we can conclude that out of the given options positrons are spontaneously emitted from the nuclei of potassium-37.

Leto [7]3 years ago
4 0
Positrons are spontaneously emitted from the nuclei of potassium -37.
You might be interested in
M
Akimi4 [234]

Answer:

469N

Explanation:

adding all mass i hope you got

7 0
2 years ago
Help plz with my science hw
Alex787 [66]
A    k     d     e     l     n      o     c     b     f      i     h      g     m     j

3 0
3 years ago
Write the name for the compound whose formula is shown here<br><br> Ca3(BO3) 2
4vir4ik [10]

Answer:

Calcium Nitrate

Explanation:

3 0
3 years ago
What is kinetic energy?
Natali5045456 [20]

Answer:

<h3>D energy of motion</h3>

Explanation:

Kinetic energy is the energy present in mass in motion

3 0
3 years ago
HClO4+P4O10=H3PO4+Cl2O7 how do you balance this?
Tom [10]

12 HClO₄ + 1 P₄O₁₀ → 4 H₃PO₄ + 6 Cl₂O₇

<h3>Explanation</h3>

Balance by the conservation of atoms.

Assign coefficient <em>1 </em>to the species with the largest number of elements and atoms. H₃PO₄ contains three elements. Each of its molecule contains eight atoms, that's two more than the six atoms in a HClO₄ molecule. Start by assigning H₃PO₄ a coefficient of <em>1</em>.

? HClO₄ + ? P₄O₁₀ → <em>1</em> H₃PO₄ + ? Cl₂O₇

There are now three H atoms, one P atom on the product side. H₃PO₄ is the only product that contains H and P atoms. As a result, there should be the same number of H and P atoms on the reactant side.

  • Among all reactants, only HClO₄ contains H atoms. Each HClO₄ molecule contains one H atom. Three H atoms correspond to three HClO₄ molecule.
  • Among all reactants, only P₄O₁₀ contains P atoms. Each P₄O₁₀ molecule contains four P atoms. One P atom corresponds to 1/4 of a P₄O₁₀ molecule.

Thus

<em>3</em> HClO₄ + <em>1/4</em> P₄O₁₀ → <em>1</em> H₃PO₄ + ? Cl₂O₇

There are three Cl atoms in three HClO₄ molecules. HClO₄ is the only species that contains Cl among all reactants. There are three Cl atoms on the reactant side and shall be the same number of Cl atoms on the product side.

  • Cl₂O₇ is the only molecule that contains Cl among the products. Each Cl₂O₇ molecule contains two Cl atoms. Three Cl atoms will correspond to 3/2 Cl₂O₇ molecules.

<em>3</em> HClO₄ + <em>1/4</em> P₄O₁₀ → <em>1</em> H₃PO₄ + <em>3/2</em> Cl₂O₇

Multiply both sides by the least common multiple of the denominators to eliminate the fraction. The least common multiple in this case is four.  

12 HClO₄ + 1 P₄O₁₀ → 4 H₃PO₄ + 6 Cl₂O₇

5 0
3 years ago
Other questions:
  • 3) Of the choices below, which of the following contains covalent bonds? A. PCl5 B. RbCl C. PbCl2 D. MoCl6
    8·1 answer
  • How many carbon atoms are in 4.00g of butane
    12·2 answers
  • Which of the following statements about metallic bond are correct?
    15·1 answer
  • PLEASE HELP!!!!
    14·2 answers
  • Select the arrangement that indicate the ions in terms of increasing ionic radii
    5·1 answer
  • The charge of the atom is based on the
    6·1 answer
  • A swimmer swims 50. Lengths of a pool each day. The pool is 30 meters long. What distance does she swim each day in meters
    7·1 answer
  • 12 points
    12·1 answer
  • A halloon has a volume of 456 mL at a pressure of 1.0 atm. It is taken under water in
    15·1 answer
  • Select the correct answer. if two half-lives have passed since a scientist collected a 1.00-gram sample of u-235, how much u-235
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!