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Antiknock Compounds - Characteristics of Hydrocarbons
To decrease the knocking property or to enhance the octane number of a fuel certain chemicals are included in it. These are termed as antiknock compounds. One such type of substance, which is widely used, is tetraethyl lead (TEL). TEL is utilized in the form of following mixture,
TEL = 63%, Ethylene bromide = 26%, Ethylene chloride = 9% and a dye = 2%.
Though, there is a drawback that the lead is deposited in the engine. To eradicate the free lead, ethylene halides are added that combine with lead to form volatile lead halides.
The only nonradioactive isotope of fluorine has 9 protons and 10 neutrons. a. What is its mass number. b. Write the full symbol of this atom.
AT 25 DEGREES CELCIUS,THE MOLAR IONIC CONDUCTIVITIES OF CALCIUM IONS,MAGNESIUM IONS AND ZINC IONS 3.87,5.01 AND 7.35 MILISECONDS SQUARE METRE PER MOLE RESPECTIVELY.CALCULATE THEIR
Permanganate titrations - Oxidation reduction titrations These are titrations where potassium permanganate is utilized as an oxidising agent in acidic medium. The medium is org
Group 1- Alkali Metals The elements of group 1 are commonly known as alkali metals after the alkaline properties of their hydroxides such as NaOH. The atoms have the (ns) 1 e
The K sp of the phosphate fertilizer CaHPO 4 .2 H2O is 2.7 x 10 -7 at 25 o C. What is the molar concentration of a saturated solution? What mass of this compound will dissolve
Which is the most covalent: (1) C- O (2) C- Br (3) C- S (4) C-F A
how to write chemistryindailylife assignment
The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is: (1) 17 (2) 37 (3)2 (4)38 Ans: 17
classification of alkenes
Applications of flame photometry: A few common applications of flame photometry are given below. Flame photometry could be used to detect the presence of the elements o
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