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Ask QuestionPosted by Shrenik Palresha 8 years, 3 months ago
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Posted by Mohd Shaquib 8 years, 3 months ago
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Amar Kumar 8 years, 3 months ago
Entropy, the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work. Because work is obtained from ordered molecular motion, the amount of entropy is also a measure of the molecular disorder, or randomness, of a system. The concept of entropy provides deep insight into the direction of spontaneous change for many everyday phenomena.
Posted by Mohammad Afzal 8 years, 3 months ago
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Sweety Sheoran 8 years, 3 months ago
Amar Kumar 8 years, 3 months ago
The mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.
Posted by Swami Ji 8 years, 3 months ago
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Amar Kumar 8 years, 3 months ago
Stoichiometry measures these quantitative relationships, and is used to determine the amount of products/reactants that are produced/needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry.
Posted by Srishti Agarwal 8 years, 3 months ago
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Amar Kumar 8 years, 3 months ago
Metamerism in chemistry is the type of isomerism in which chemical compounds have identical proportions of the same elements and the same molecular weight, but have radicals differing in type or position, with resulting differences in chemical properties.
Compounds having the same molecular formula but different number of carbon atoms ( alkyl groups) on either side of functional group ( i.e., -O-,-S-, -NH-, -C(=O)-) are called metamers and the phenomenon is called metamerism. metamerism occurs amongst the members of the same homologous family.
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Anki Kaun 8 years, 3 months ago
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Bhawani Tanwar 8 years, 3 months ago
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Shweta Jaiswar 8 years, 3 months ago
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Naveen Sharma 8 years, 3 months ago
They are mathematical functions used to describe the wave like properties of the electrons in an atom. They represent the regions where the probability of finding an electron is maximum around the nucleus of the atom. These are also called as atomic orbitals that are represented by 3 quantum numbers: n(principal quantum number), l(azimuthal quantum number) and m(magnetic quantum number). These quantum numbers are used to specify the electron's energy, location and angular momentum.
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Pradeep Samota 8 years, 4 months ago
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Naveen Sharma 8 years, 3 months ago
In diamond each carbon atom is bonded to four other carbon atoms which forms giant, three dimensional structure. Due to its giant structure diamond cannot easily heated up. Because giant covalent compound has many atom joined together by covalent bonds. To break all these bonds lot heat energy is required
Posted by Krishna Kenchareddy 8 years, 4 months ago
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Naveen Sharma 8 years, 3 months ago
In organic chemistry, functional groups are specific groups (moieties) of atoms or bonds within molecules that are responsible for the characteristic chemical reactions of those molecules.
Posted by Ramya Sri 8 years, 4 months ago
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Posted by Amjad Bahar 8 years, 4 months ago
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Naveen Sharma 8 years, 3 months ago
Electron Gain Enthalpy is the energy released when one mole of electron are added to gaseous atoms of an element. Electron Affinity is the same as Electron Gain Enthalpy but viewed as the energy supplied to the surroundings rather than that released by the atoms. Hence its sign is opposite from the latter.
Priya Goswami 8 years, 4 months ago
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Hamza Muhammed 8 years, 4 months ago

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