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The Ksp of the phosphate fertilizer CaHPO4.2 H2O is 2.7 x 10-7 at 25oC. What is the molar concentration of a saturated solution? What mass of this compound will dissolve in 3.0 L of water at this temperature?
The difference in the mass of 100 moles of sodium atoms and sodium ions is 5.48002grams .compute the mass of an electron
A solid substance with a mass of 200g is at its melting temperature in a calorimeter. While the substance changes from a solid to a liquid at the same temperature, the 400-gram mas
Why do the hydrides of O and F in group 16 and 17 respectively show abnormally high melting points and boiling points as compared to other hydrides in their respective groups? Expl
a. How does vulcanization change the character of natural rubber? b. Why are the numbers 66 and 6 put in the names of nylon-66 and nylon-6?
Sensory evaluation during product life cycle The basic procedure for developing a new product, and supporting it while marketed, included distinct steps that are constant no
A nucleophile is a chemical species that donates an electron pair to an electrophile to form a chemical bond in a reaction. All molecules or ions with a free pair of electrons or a
Tetracyclines: The tetracyclines consist of hydronapht-hacene skeleton like the characteristic structural unit. The structures of tetracycline are specified as follows,
What are the physical and chemical properties of lactic acid?
Q. Show example of electromagnetic radiation? When light associated with energy hv, such that D 0 . = hv, is passed through a solution of [Ti(H 2 0) 6 ] 3+, absorption of ligh
The energy of an electron of 2py orbital is: (1) Greater than that of 2p x orbital (2) Less than that of 2p x orbital (3) Equal to that of 2s orbital (4) Same a
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