three most important questions

The U.S. imported 600 million tons of cotton in the year 2000 and the imports fell to 500 million tons in the year 2001. Find the percent of decrease in the imports of cotton. => 16 2 3 or 16 3 4 or 16 1 3 or None of the above..

1 mole of an atom = 1 gram atomic weight of an atom 1 mole of a molecule = 1 gram molecular weight of molecule 1 mole of a gas = 22.4 liters of gas at STP 1 mole of a substance = 6.023 x 10 2 3 , atoms, molecules or ions Molecular weight = 2 x Vapor density 1 molar..

Some important results - Given a, b, c and d are non-zero real numbers, we can deduce other proportions by simple Algebra. These results are often referred by the names mentioned along each of the properties obtained. (1) If then bc = ad This property is known as INVERTENDO. (2) If , then..

The following has to be committed to memory 1) sin 2 q + cos 2 q = 1 2) sec 2 q - tan 2 q =1, 3) cosec 2 q - cot 2 q =..

The table shows the production, imports and consumption of electricity of a particular State. Pick an appropriate bar graph that represents the statistics in the table. Year Electricity production Electricity imports Consumption 1985 70 70 65 1990 75 75 80 1995 80 70 70 2000 70 ..

- The food passively sinks into the body on contact. ..

Acid Molecular formula Acid Molecular formula Hydrochloric acid HCL Acetic acid CH 3 COOH Nitric acid HNO 3 Carbonic acid H 2 CO 3 sulphuric acid H 2 SO 4 Sulphurous acid H 2 SO 3 phosphoric acid H 3 PO 4 N..

Introduction - Sodium belongs to Group I in the periodic table. This group is otherwise known as the alkali metals group. Since the atomic number of sodium is 11, its electronic configuration is 2,8,1. Sodium easily loses the lone electron to attain the stable configuration of neon. Therefore alkal..

(CaSO 4 ) 2 .H 2 O Gypsum Calcium sulphate dihydrate CaSO 4 .2H 2 O Dead burnt plaster Calcium sulphate anhydrous CaSO 4 Lime stone Calcium carbonate CaCO 3 Some of the important compounds of sodium and calcium were discussed in this chapter. It ..

Introduction - Sodium belongs to Group I in the periodic table. This group is otherwise known as the alkali metals group. Since the atomic number of sodium is 11, its electronic configuration is 2,8,1. Sodium easily loses the lone electron to attain the stable configuration of neon. Therefore alkal..