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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
The frequency of an electromagnetic radiation is 2x 10 6 Hz. . What is its wavelength in metres : (Velocity of light = 3x10 8 ms -1 ) (1)6.0x 10 14
the verification of the law of chemical combination
what is antifertility drugs ? definition with example
Q. Illustrate modern atomic model of De Broglie? 1. Electrons inhabit the space surrounding the nucleus and can exist in several discrete principal energy levels each designate
WHAT IS EBT
Gabriel phthalimide synthesis: This method includes the subsequent three steps. 1. Phthalimide is reacted along with KOH to form potassium phthalimide. 2. The potassium salt
(a) Given the values below, calculate the concentration of benzoyl peroxide required to prepare polystyrene with a number average molar mass of 400,000 by bulk free radical polymer
Q. Explain Dalton’s atomic theory? The atomic theory In 1808 John Dalton projected a theory to explain the laws of conservation of matter definite proportions and multiple prop
what are the reactions involved using pottasium dichromate method?
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