An isotope undergoes radioactive decay. The new isotope that forms has an atomic number that is 2 less than the original isotope’s. Which kind of decay has occurred, and how do you know?
alpha decay because alpha particles have a large mass
beta decay because beta particles can have negative charge
alpha decay because alpha particles have two protons and two neutrons
gamma decay because gamma rays are photons
Answers
The kind of decay which has occurred is: C. alpha decay because alpha particles have two protons and two neutrons.
What is an alpha decay?
An alpha decay refers to a type of radioactive decay in which the atomic nucleus of a radioactive element emits an alpha particle (two protons and two neutrons), thereby, producing chemical elements with a different atomic nucleus.
Basically, this isotope has a mass number that is decreased by four (4) and an atomic number (protons) that is decreased by two (2), which is an atom of Helium (He).
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Is melting ice an endothermic or exothermic? its a big class discussion in chemistry and the teacher won't tell us until the whole class agrees
The symbol for the metric unit used to measure mass is?
Answers
The name of the compound given in the question is nitrogen trifluoride.
What is a compound?
Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.
Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:
1)Molecular compounds where in atoms are joined by covalent bonds.
2) ionic compounds where atoms are joined by ionic bond.
3)Inter-metallic compounds where atoms are held by metallic bonds
4) co-ordination complexes where atoms are held by co-ordinate bonds.
They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.
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Answer:
Nitrogen Trifluoride
Explanation:
Thanks
Answers
C8H18 + 25/2O2 -> 9H2O + 8CO2
You are given 10 moles of octane and you are required to find the volume of octane
10 moles C8H18 (25/2 moles O2/ 1 mole C8H18) = 125 moles O2
V = 125 moles O2 ( 24 dm3 / 1 mole of gas)
V = 3000 dm3
Answers
Answer:
Hypervitaminosis is a serious health issue which is associated with the accumulation of the vitamins in the body. This problem is mainly associated with the fat soluble vitamins.
This is because the fat soluble vitamins gets accumulated in the fatty cells of the body. Whereas, in case of water soluble vitamins it gets dissolved in water and gets eliminated from the body.
So, there is very rare chance that the water soluble vitamin not cause hypervitaminosis.
Final answer:
Hypervitaminosis does not typically occur with water-soluble vitamins because excess amounts are excreted in urine rather than stored in the body, preventing a harmful build-up that could lead to toxicity.
Explanation:
Hypervitaminosis is indeed a health threat associated with excessive intake of fat-soluble vitamins, but water-soluble vitamins do not typically pose this risk because of how our bodies process them. Fat-soluble vitamins, which include vitamins A, D, E, and K, can be stored in our bodies, specifically in our liver and fat tissues. Therefore, consuming them in excessive amounts can lead to accumulation, resulting in toxic effects known as hypervitaminosis.
On the other hand, water-soluble vitamins, which include vitamins B and C, cannot be stored in the body for a long duration. Any excess intake of these vitamins is typically excreted in urine, preventing a harmful build-up in the body, thus reducing the risk of hypervitaminosis.
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B) Water molecules move from their fixed positions.
C) Water molecules lose energy.
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Answers
ions are of two types
1. cations ( positive ion )
2. anion (negative ion )
for e.g Al³+
In ion is an atom who lose or gain electrons. When it lose an electron, the number of protons will be higher than then number of electrons in an normal atom, and will be called positive ion or cation.
Example: The Aluminium lose 3 electrons. So the ion of Al will be
Ionization equation:
And When an ion gain electrons, the number of electrons will be higher than the number of protons in an normal atom, and will be called negative ion, or Anion..
Example: the Chloride gain 1 electron. So the ion of Cl is
Ionization equation:
HOPE THIS HELPS :D
B. Radius
C. Density
D. Percent oxygen
Answers
Answer:
Correct answer is option B
Explanation:
Extensive propery:
The property which depends on the amount of matter is known as extensive properties of matter. It means if amount of a matter changes than its extensive properties will also changes for example if amount of matter is reduced than its volume will be reduced so volume is extensive property.
Extensive properies can be observed and measured.
Among the given options Radius is the option which depends on amount of matter it means if amount of matter will be large than the radius of air bubble will be large. So radius is an extensive property.
An extensive property of a bubble of air from the given options is radius. (Option B).
What is an extensive property?
An extensive property is a property that depends on the amount or size of a substance or system.
For this question of a bubble of air, the radius (B) is an extensive property because it depends on the size or volume of the bubble. As we increase the size of the bubble, the radius will also increase.
The other properties listed, temperature (A), density (C), and percent oxygen (D), are not extensive properties. Temperature and percent oxygen are intensive properties because they do not depend on the size or amount of the substance; they are inherent properties of the air within the bubble. Density is also an intensive property because it describes the mass per unit volume, which remains constant regardless of the size of the bubble.
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