Stoichiometry (Unsolved) How many grams of phosphoric acid would be needed to neutralise 100gm of magnesium hydroxide? (Molecular weight of H3PO4 = 98 and Mg(OH)2 = 58.3 gm) (A) 66.7 (B) 252gm (C) 112gm (D) 168 gm 10 L of…
Illustration 1: Among maleic acid and fumaric acid which is a stronger acid and why. Solution: Maleic acid is nothing but cis-butene dioic acid while fumaric acid is the trans isomer. The conjugate base of maleic acid i.e., the maleate…
Illustration 1: A cylinder of gas is assumed to contain 11.2 kg butane. If a normal family needs 20,000 kJ of energy per day for cooking. How long will the cylinder last if the enthalpy of combustion DH =…
Illustration 1: A 8.0 g sample contained Fe3O4, Fe2O3 and inert materials. It was treated with an excess of aqueous KI solution in acidic medium, which reduced all the ion to Fe+2 ions. The resulting solution was diluted to…
CHEMISTRY Comprehension-I Read the paragraph and answer the questions (18 – 20) given below: Carbene is an important intermediate and can be formed in many reactions. One of these is elimination of gem dihalide by active metal.…
CHEMISTRY Multiple Choice Questions (Single Option Correct) If there were three possible values for the spin magnetic quantum number, ms, how many elements would there be in the 5th period of the periodic table? (A) 28 (B) 48 (C) …
02-LOGARITHMS., SURDS-(E)-ASSIGNMENT (a) (b) (c) (d) None of these The value of is (a) –2 (b) (c) 2 (d) None of these The value of is [IIIT Allahabad 2000] (a) 1 (b) 2 (c) …
2 1.1.1 Definition. “The Logarithm of a given number to a given base is the index of the power to which the base must be raised in order to equal the given number.”…
47.The special theory of relativity Download HC Verma Physics Chapter wise Solutions
46.The Nucleus Download HC Verma Physics Chapter wise Solutions
