Alpha, beta, and gamma radiation are all examples of
Answers
Answer:
These all are example of ionizing radiations.
Explanation:
Alpha beta and gamma radiations are the examples of ionizing radiations. When an atom is an excited state and having high energy, the atom is in unstable state. The excess of energy is released by the atom to get the stability. The released energy is in the form of radiations which may include alpha, beta, gamma, X-ray etc.
Alpha radiations:
Alpha radiations are emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number 4 less than and atomic
number 2 less than the starting atom.
- Alpha radiations can travel in a short distance.
- These radiations can not penetrate into the skin or clothes.
- These radiations can be harmful for the human if these are inhaled.
Beta radiations:
Beta radiations are result from the beta decay in which electron is ejected. The neutron inside of the nucleus converted into the proton an thus emit the electron which is called β particle.
- The mass of beta particle is smaller than the alpha particles.
- They can travel in air in few meter distance.
- These radiations can penetrate into the human skin.
- The sheet of aluminium is used to block the beta radiations.
Gamma radiations:
Gamma radiations are high energy radiations having no mass.
- These radiations are travel at the speed of light.
- Gamma radiations can penetrate into the many materials.
- These radiations are also used to treat the cancer.
- Lead is used for the protection against gamma radiations because of its high molecular density.
- The lead apron are used by the person when treated with gamma radiations.
- Lead shields are also used in the wall, windows and doors of the room where gamma radiations are treated, in-order to protect the surroundings.
Answer:
a
Explanation:
Related Questions
Identify the bond types between the carbon and the two oxygen Atoms in the carbon dioxide molecule.
21 Which mathematical expression represents the heat of reaction for a chemical reaction?(1) (the heat of fusion) – (the heat of vaporization)(2) (the heat of vaporization) – (the heat of fusion)(3) (the potential energy of the products) – (the potential energy of the reactants)(4) (the potential energy of the reactants) – (the potential energy of the products)
How do the energy and the most probable location of an electron in the third shell of an atom compare to the energy and the most probable location of an electron in the first shell of the same atom?(1) In the third shell, an electron has more energy and is closer to the nucleus.(2) In the third shell, an electron has more energy and is farther from the nucleus.(3) In the third shell, an electron has less energy and is closer to the nucleus.(4) In the third shell, an electron has less energy and is farther from the nucleus.
The same amount of force is applied to bowling balls one of the balls Waze 8 pounds and the other weighs 13 pounds which bowl will have a greater acceleration
b. 6.2 M HF
c. 8.3 M HF
d. 15 M HF
Answers
HF = 1 + 19 = 20.0 g/mol
Number of moles :
124 / 20.0 => 6.2 moles
Volume = 2.4 L
M = n / V
M = 6.2 / 2.4
M = 2.6 M
Answer A
hope this helps!
Molarity =
moles of HF =
=
= 6.2 mol
∴ molarity of HF =
= 2.58 M
≈ 2.6 M
placing the products in an ice bath
Answers
Answer:
placing the reactants on a hot plate
Explanation:
If the temperature goes up, the reaction rate will increase. Because the particle will move faster and makes the kinetic energy larger.
AgC2H3O2(aq) + CaCl2(aq) →
Answers
Answer:
2Ag^+(aq) + 2Cl^-(aq) --------> 2AgCl(s)
Explanation:
The net ionic equation reflects the main reaction that occurred in the system. It tells you the most important reaction that took place.
If we first put down the balanced molecular equation for the reaction, we have;
CaCl2(aq) + 2 AgC2H3O2(aq) ---------> 2 AgCl(s) + Ca(C2H3O2)2 (aq)
The net ionic equation is;
2Ag^+(aq) + 2Cl^-(aq) --------> 2AgCl(s)
Answers
Answers
Answer:
Corrosion of Copper is a chemical change.
Explanation:
Copper like Iron when come in contact with moisture and oxygen oxidized and corrodes according to following equation,
4 Cu + O₂ → 2 Cu₂O
This corrosion results in lost of conductivity, strength and luster of copper. As in this reaction two substances i.e Cu and O₂ are reacting to produce a completely new substance i.e. Cu₂O hence, it is declared as chemical change.
The process which represents a chemical change is (2) corrosion of copper.
FURTHER EXPLANATION
Matter may undergo two types of changes: physical or chemical change.
Physical change involves changes in appearance, size, and other physical properties of a substance. There is no change in the composition or identity of the substance. Examples of physical changes are changes of state and change in size.
Chemical changes are changes wherein the composition or identity of the substance is altered. The properties of the substance changes. This involves formation of a new substance due to the rearrangement of atoms. Examples of chemical change are burning and rotting.
- Melting of Ice is a physical change. It is only a state change from solid to liquid.
- Corrosion of copper is a chemical change. A new substance forms when copper is corroded and there is a change in the property of the substance. Copper is a conductor but copper oxide is not.
- Evaporation of water is a physical change. It is a state change from liquid to vapor.
- Crystallization of sugar is a physical change. The composition of sugar remains the same and no new chemical bonds are formed.
LEARN MORE
- chemical and nuclear reaction brainly.com/question/9566647
- rusting brainly.com/question/973790
Keywords: physical change, chemical change
Answers
Half-life (t) = ln2/k = 3.8 days
k = 0.182407/day
Using the general equation of a first order reaction:
Ca/Cao = 1/e^(kt)
Ca/Cao = 0.01506 --> fraction of radon-222 left
This means that 1.51% of the original amount remains, so 1.51% of 73.9 is 1.11 grams.