laboratory values

Introduction - The concept of limits leads to define and describe continuity and derivative of the function. The continuity of a function has practical as well as theoretical importance. We plot graphs by taking the values generated in the laboratory or collected in the field. W..

The concept of limits leads to define and describe continuity and derivative of the function. The continuity of a function has practical as well as theoretical importance. We plot graphs by taking the values generated in the laboratory or collected in the field. We connect the..

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The bonds between carbon and hydrogen are broken down with the help of oxygen to give energy (oxidation). Carbohydrates produce 4.1kcal/g energy under laboratory conditions. This is called calorific value . However, in the body they produce 4kcal/g of energy. This is called p..

Indicators - Indicators are the chemicals that when added to solutions show whether the solution is acidic or basic, by a sudden change of their colour. The common indicators used and the colour changes observed are mentioned belo..

Physical Quantities and their Measurement - The development of chemistry is based upon the systematic approach of the scientists in carrying out different experiments. Scientific theories, inferences and generalizations are made on the observations recorded. The quantitative information involves th..

Maxwell's Speed Distribution Law - The rms speed of an oxygen molecule in a sample at 300 K is about 480m/s. This does not mean that the speed of each molecule is 480 m/s. Many of the molecules have speed less than 480m/s and many have speed more than 480m/s. Maxwell derived an equation giving the ..

When coal is heated without air, it does not burn but produces many by-products. This process of heating coal in the absence of air is called destructive distillation of coal. The main by products are: coke coal tar amino acid liquor coal gas The destructive distillation of coal can be carried out ..

The velocity as determined above, gives the velocity of sound at the laboratory temperature t o C. This temperature is noted using a wall thermometer in the laboratory. The experiment is repeated, using tuning forks of different frequencies. The readings are tabulated. The mean ..

to protect iron from rusting. Iron Fe No reaction with cold water (rusting is a joint reaction with oxygen). When the metal is heated in steam an iron oxide (unusual formula) and hydrogen are formed, This oxide is ‘technically’ Iron (III,II) oxide!!! 3Fe (s) + 4H 2 O (g) -------- > F..