adding fractions calculator

Knowing the solubility product of a salt, it is possible to predict whether on mixing the solution of its ions, a precipitate will be formed or not. For precipitation to occur, its ionic product should exceed solubility product. Therefore, to predict the precipitation reaction, we calculate..

If the degree of the numerator is greater than the degree of the denominator in a rational fraction, then the rational function is called improper rational function. Like the case of improper fractions reducible to an integer added to a proper fraction, impro..

The empirical formula of the compound is written. The empirical formula mass is calculated by adding the atomic masses of all atoms present in the empirical formula. The molecular mass or molar mass is obtained from experiment or from the vapour density relationship: m..

Determination of the Molecular Formula of a Compound - The empirical formula of the compound is written. The empirical formula mass is calculated by adding the atomic masses of all atoms present in the empirical formula. The molecular mass or molar mass is obtained from experime..

(i) Radioactive dating This gives us an approximate age of the rock or material containing the radioactive atoms. For e.g., A measurement of a fraction of uranium atom which have decayed into lead (by knowing the half life of uranium) tells us how old the rock is. (ii) Radiation from s..

. The density of the acid can then be read on the floating hydrometer. The acid in a fully charged cell should have a relative density of 1.25 to 1.30. A reading of less than 1.18 indicates that recharging is necessary. Solved Examples:- Example 1:- A body weighs 600 g in air and 400 g in water. ..

The balancing of a chemical equation by ion-electron method (using half reactions) is done acccording to the following steps: Find the elements whose oxidation numbers are changed. Choose the substance, which acts as an oxidizing agent and one that acts as a reducing agent. Separate the compl..

.e., any amount of alcohol or water can be mixed with each other. Temperature changes for such solutions are usually not of primary importance. It is important to remember that for a mixture of liquids, the terms miscible and immiscible are frequently used, rather than soluble and insoluble. If alc..

The diagram shows fixed pulley being used by a bag to lift a load of 400N through a vertical height of 5 m in 10 s. The effort applied is 480 N (i) What is the V.R of the pulley? (ii) Calculate the M.A and efficiency (iii) Why is the efficiency of the pulley not 100% (iv) Calculate..

The weight w 1 of the weight hanger H is noted. A load of, say w 2 = 1kg is added to the hanger. Now, the tension in the string will be T = (w 1 + w 2 ) g newtons, where g is the acceleration due to gravity. The given tuning fork is struck on a hard rubber pad and the shank of the for..