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obtain the mole of substance in the following. 7.05g Br2
(i) Illutrate integrated rate law and derive it for first order reaction. (ii) Why coal does not burn by itself in air but once initiated by flame, it continues to burn?
240 g of water at 20 degree C are mixed with a sample of iron at 500 degree C. The final temperature of the system is 42 degree C. Find the mass of the iron sample
1 gm of a metallic oxide on reduction gives 0.68 gm of the metal. ans) Mass of metal/mass of oxygen=eq. mass of metal/eq. mass of oxygen. applying this we get .68/.32=x/8 x=1
preventive measures of priming and foaming
In a heteronuclear molecule a bond is build between different atoms, and the most important difference from the homonuclear case is that molecular orbitals (MOs) are no longer sh
Basic radical chemical analysis?
when a 0.800g sample of CaCl2 is dissolved in 9.85g of water in a microscale calorimeter the temperature of the solution rose from 23.4 degrees celcius to 35.8 degrees celcius.calc
Explain why nichrome and not copper is used as heating element whereas manganin is used as standard resistance? For heating elements, primary requirements are high melting poin
general principle on metelurgy
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