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A monosaccharide A has a molecular weight of 150 Da. The two stereoisomers B and C that are both optically inactive form when A reacts with NaBH 4 . Illustrate the structures o
what is chemistry
1. Express 95 mg/l of Ca 2+ as milligrams per liter of CaCO 3 . 2. Express 221 mg/l of Ca(HCO 3 ) 2 as equivalents per liter of CaCO 3 . 3. Determine the concentration o
The radius of electron in the first excited state of hydrogen atom is: (1) a 0 (2) 4a 0 (3) 2a 0 (4) 8a o
Difference between thermoplastic and thermosetting polymers Thermoplastic polymers Thermosetting polymers (1) Thermoplastic polymers
given: reciprocal linear dispersion= 2.5 nm/mm focal length = .30 m groove spacing = d = 833.3 nm wavelength = 400 nm
Show by means of equations and reagents, how the following conversion would be achieved? Propyne to butanoic acid
Q. What are the physical properties of solids? Ans. Most solids eventually melt when heated. This is because the particles gain enough energy to exceed the attractive for
verify that less than 5% of the reactants have been consumed
You are given a sample block of an unknown metal. The block displaces 3.24 mL of water and has a mass of 62.5429 g. What is the density of the unknown metal? What is the metal?
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