Mindblown: a blog about philosophy.
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Short-cut tech. for balancing a chemical eq.
Example: aCaCO3 + bH3PO4 → cCa3(PO4)2 + dH2CO3 Set up a series of simultaneous equations, one for each element. Ca: a=3c C: a=d O: 3a+4b=8c+3d H: 3b=2d P: b=2c Let’s set c=1 Then a=3 and d = a = 3 b = 2c = 2 So a=3; b=2; c=1; d=3 The balanced equation is 3CaCO3 + 2H3PO4 → Ca3 (PO4)2 + 3H2CO3
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Balancing of a Chemical Reaction
Law of Conservation of mass According to the law of conservation of mass, no atoms can be created or destroyed in a chemical reaction, so the number of atoms for each element in the reactants side has to balance the number of atoms that are present in the products side.In other words, the total mass…
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Chemical Reactions and Eq I
Word equation A word equation is a chemical reaction expressed in words rather than chemical formulas. It helps identify the reactants and products in a chemical reaction. A chemical reaction is described using a word equation, which is a shorthand manner of expressing it. The names of the reactants are shown on the left side of a word equation.…
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Observations that help determine a chemical reaction
A chemical reaction can be determined with the help of any of the following observations:a) Evolution of a gasb) Change in temperaturec) Formation of a precipitated) Change in coloure) Change of state
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Introduction and Chemical Reactions
Science is a subject that explains how the world around us is made of Chemical reactions that are used to explain the various processes that happen around us. From rust to decomposition, chemical reactions provide a more in-depth insight into how molecular interaction and changes occur. Chemical Reactions A chemical reaction occurs when one or more reactants (also known as reactants) are changed into one or more products (also known as products). The constituent atoms of the reactants are rearranged in a chemical reaction, resulting in the formation of various substances as products. Physical and chemical changes Chemical change…
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Chromosomes and Other
Chromosomes are the genetic material present in the nucleus. It contains DNA with associated proteins. They are present as threads called chromatin. During the growth phase of the cell, the chromatin condenses into a much thicker structure called a chromosome. Human cells contain 23 pairs of chromosomes (46). Chromatin Chromatin is a thread-like structure which serves as the…
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Nucleus in cells
The nucleus is the processing unit of the cell. It is a double membrane-bound organelle which contains the genetic material for inheritance. The nuclear membrane contains pores that allow the transfer of materials from the nucleus to the cytoplasm. The nucleus is the brain of the cell as it controls various functions such as cell…
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Osmosis in selectively permeable membrane
Osmosis is the movement of water across a semi-permeable membrane. Osmosis is a selective process since the membrane does not allow all molecules to pass through it. Water is usually the only free flowing molecule across this membrane. Isotonic, hypotonic solutions, hypertonic solutions Isotonic solutions are those which have the same solute and pH concentration…
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Structural Organization of Cells
Prokaryotic & Eukaryotic cells Two types of cell; Prokaryotic and Eukaryotic cells. Prokaryotic cells are primitive and lack well defined nucleus. Eukaryotic cells are more advanced and have well defined nucleus. Cell structure in Eukaryotic cells Eukaryotic cells have the most well defined structure. These cells have cell membrane, membrane bound cell organelles and a…
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Fundamental Unit Of Life
Life, as we know it, took billions of years to evolve. From the very first precursor of life to the multitude of multicellular organisms that we see around us today, the most basic unit of all these is the cell. All About Cells Cells are the basic structural and functional unit of life. Cell was…
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