which of the following is a solution of the equation 43 = 21

Which of the following is a solution of the equation x - 43 = 21? => 21 or 65 or 74 or 64..

The colloidal solutions prepared by various methods usually contain electrolytes and other soluble substances as impurities. These impurities if not removed can destabilize the sols. Impurities are removed by the following methods: 1) Dialysis 2) Ultra-filtration 3) Ul..

The following are Brian's test scores. 12, 13, 16, 21, 23, 29, 31, 26, 42, 33, 47, and 43 Find his mean score. => 28 or 12 or 336 or 27.7..

Question: Which of the following is not a characteristic of mixed cropping? 1. Minimises risk of crop failure 2. Set pattern of rows 3. Harvesting and threshing of crops separately is not possible 4. Individual marketing and consumption of crop is not possible ..

Gold being a noble metal occurs in its native form. It is further purified by the process of leaching or precipitiation called hydrometallurgy. The native gold in its complex form is first precipitated with potassium cyanide solution. It is then recovered from the solution by a..

Formula mass of KNO 3 = (39 amu + 14 amu + 3 x 16 amu) = 101 amu Then, ..

As per the equation, 8 vols. : 3 vols. Volume of NH 3 required to combine with 3 volumes of Cl 2 = 8 vols Volume of NH 3 required to combine with 21 litres of Cl 2 =? NH 3 : Cl 2 8 : 3 x : 21 Minimum volume of ammonia required = 56 litr..

It is customary to indicate the strength of a sample of hydrogen peroxide solution in terms of the 'volume of oxygen at NTP that one volume of hydrogen peroxide gives on heating'. When the grade of H 2 O 2 in volumes is given, its percentage strength can be calculated as follows..

In the first compound hydrogen = 5.93% Oxygen = (100 -5.93) = 94.07% In the second compound hydrogen = 11.2% Oxygen = (100 -11.2) = 88.88% Ratio of the masses of oxygen that combine with fixed mass of hydrogen 15.86: 7.9 or 2:1 The ratio illustrates the law of multiple proportio..

In a beryllium chloride molecule represented by the type AB 2 , the central atom A has two electron pairs located on either side of it, the molecule AB 2 takes a linear geometry...