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Q. What is compound?
A compound is a substance which consists of two or more elements chemically combined. The elements in a compound aren't simply mingled together as they are in a mixture. In its place they are combined in a way such that the compound has properties that are different from those of the elements of which it is composed. Every compound is represented by a formula a combination of the symbols of the elements that make up the compounds. You may already recognize some chemical formulas such as H2O for water, NaCl for table salt and NH3 for ammonia.
apparatus and principle of Flah photolysis...and 3rd order reaction with two same and one different concentration.
i wanted the glycol properties and its chemical reactions n preparation
The atomic number of an element is 17. The number of orbitals containing electron pairs in its valence shell is: (1) Eight (2) Six (3) Three
Wavelength associated with electron motion: (1) Increases with increase in speed of electron (2)Remains same irrespective of speed of electron (3) Decreases with increa
Physical chareterstics of carbonyl compounds Physical state: a. Methanal is a pungent smell gas. b. Ethanal is a volatile liquid and boiling points 294 K. c. Other ald
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Q. Ca +2 = 20 ppm, Mg +2 = 25 ppm, CO 2 = 30 ppm, HCO - 3 = 150, K + = 10 ppm. Calculate the lime (87% pure) and soda (91% pure) required softening 1 million litt
An element have atomic weight 40 and it's electronic configuration is 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 . Then its atomic number and number of neutrons will be: (1) 18 and 22
what is gas law? and its formula
Water at 150 kPa is contained in a 300 L tank.At this state (state 1), 95% of the volume isoccupied by saturated vapour. Heat is transferred to the water thereby raising itspressur
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