Sand is being poured at the rate of 3000 cm3/son the ground from the o..
Sand is being poured at the rate of 3000 cm 3 /s on the ground from the orifice of an elevated pipe and forms a pile, which has always the shape of a right circular cone whose height is equal to the base radius. Find the rate at which the height of the pile is rising w..
Two rods A and B are heated. The temperature of rod A is 105°F an..
Two rods A and B are heated. The temperature of rod A is 105°F and that of rod B is 98°F. The temperature of rod A is rising at a rate of 0.5°F per hour and the temperature of rod B is rising at a rate of 1 °F per hour. If the temperature cont..
Units of rate of reaction
. If the concentration of iodine rises from 0 to 10 - 5 mol L - 1 in seconds, [Here symbol D represents a change and I 2 represents the molar concentration of iodine]. This change in concentration of the product (iodine) takes place in ten seconds. Thus the rate can be called th..
. If the concentration of iodine rises from 0 to 10 - 5 mol L - 1 in seconds, [Here symbol D represents a change and I 2 represents the molar concentration of iodine]. This change in concentration of the product (iodine) takes place in ten seconds. Thus the rate can be called th..Fruit Ripening
Exogenous application of ethylene induces climacteric (sudden but brief rise in respiration rate) and the fruits ripen quickly. Examples: Banana, mango and appl..
Gas Laws - Charles' Law
Gas Laws - Charles' Law - Jacques Alexander Cesar Charles, a French chemist, discovered in 1787, that at a constant pressure, with rise in temperature, carbon dioxide, hydrogen, oxygen and nitrogen, all expanded at constant rates..
Evaporation
In liquids, the molecules of the liquid are always in a state of random motion, within its surface. Some molecules may have sufficient kinetic energy to escape from the surface of the liquid. This process is known as evaporation. Evaporation takes place at all temperatures. Rate of ..
Grave's disease (Exophthalmic Goitre)
It is autoimmune disorder in which the person produces antibodies that mimic that action of TSH, but not regulated by normal negative feedback controls. It is caused due to over secretion of thyroid hormones due to enlargement of the thyroid. This increases metabolic rate and accelerates..
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or, E a = 52.85 KJ / mol Example 13 For a reaction with activation energy of 55 KJ/mol, by what factor will the rate constant go up with a rise in temperature from 300 K to 310 ..
or, E a = 52.85 KJ / mol Example 13 For a reaction with activation energy of 55 KJ/mol, by what factor will the rate constant go up with a rise in temperature from 300 K to 310 ..Heat and Motion (Kinetic Theory of Heat)
. This internal energy expresses itself as the temperature of the substance. Thus, if a solid is heated, its molecules vibrate more vigorously within the intermolecular space. Its internal energy increases and hence, its temperature increases. If the solids are heated further, at a certain stage th..
Evaporation
In liquids, the molecules of the liquid are always in a state of random motion, within its surface. Some molecules may have sufficient kinetic energy to escape from the surface of the liquid. This process is known as evaporation . Evaporation takes place at all temperatures. Rate of eva..
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