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find the expression of universal gas constant R in the SI system in terms of given properties of oxygen gas
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A solution containing 0.100 mol per dm cube of tetraoxosulphate (vi) acid, B is a Solution of an impure sodium hydroxide containing 10.0gram per dm cube.if 25cm cube portion of solution B required average of 24.10cm cube for complete neutralization using methane orange as an indicator, calculate :(a) concentration of B in Mol per DM cube, (b) mass concentration of pure B in grammar per DM cube (c) mass of impurity in gram per dm^3, (d) percentage impurity and purity of sodium hydroxide.
Non-covalent bond between GLU and ARG amino acid residues was discovered within a secondary structural domain (alpha-helix or beta-pleated sheet). Select from the list all possible types of non-covalent bonding between these amino acid residues:
A.Electrostatic bond
B.Hydrophobic bond
C.Hydrogen bond
Non-covalent bond between ASP and LYS amino acid residues was discovered between two peptide chains (quaternary structure). Select from the list all possible types of non-covalent bonding between these amino acid residues:
A.Electrostatic bond
B.Hydrogen bond
C.Hydrophobic bond
Reaction of OsO4 with CO at 125 °C and 75 atm was found to result in a stable compound A with the empirical formula OsC4O4. Compound A was found to contain 3 metal-metal bonds. Reaction of A with excess of sodium metal followed by treatment with H3PO4 was found to result in compound B with the molecular formula OsH2C4O4. Heating of B was found to result in the release of a colourless gas and formation of a compound C with empirical formula OsHC4O4. C on treatment with MeI was found to get converted to D with release of a hydrocarbon gas. D on further treatment with Na/Hg followed by MeI gave E with the empirical formula OsC5H3O4. Compounds A-E obey 18 electron rule and no bridging ligands were also observed. Suggest structures for compounds A-E.
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Provide The Structure Of The Intermediates And Products For The Following Reactions NaOH, H20 CH2Cl2 OH
Using any appropriate chemical reaction give example of SN2 mechanism
Provide The Structure Of The Intermediates And Products For The Following Reactions NaOH, H20 CH2Cl2 OH
