HO

In the atomic weight determination, Dalton suggested the formula of water as HO and the composition of water as hydrogen = 12% and oxygen = 87.5%, by weight. What should be the atomic weight of oxygen on H-scale, on the basis of this information?

Correct acidic strength of given acids is:- H_(3)C -underset(I)overset(O)overset(||)C-OH (II) HO-overset(O)overset(||)C-overset(O)overset(||)C-OH (III) HO-overset(O)overset(||)C-CH_(2) -CH_(2)-overset(O)overset(||)C-OH

The given structures (I) and (II) represent configuration of the simplest sugar glyceraldehyde . Which of the following statements is not correct for the structures ? underset((I))(H-underset(CH_(2)OH)underset(|)overset(CHO)overset(|)C-OH) " " underset((II)) (HO-underset(CH_(2)OH)underset(|)overset(CHO)overset(|)C-H)

The magnetic moment of a gadolinium atom is 7.95 muB (Ho is the Bohr magneton). Gadolinium crystallizes in a face-centered cubic lattice with lattice constant of 3.2 Å. Find the saturation magnetization. Take into account that an elementary cell of a face-centered lattice contains four atoms.

Identify the reagents shown in bold in the following equations as nucleophiles or electrophiles: (a) CH_(3)COOH+HO^(-)toCH_(3)COO^(-)+H_(2)O (b) CH_(3)COCH_(3)+overset(-)CNto(CH_(3))_(2)C(CN)(OH) (c ) C_(6)H_(6)+CH_(3)overset(+)COtoC_(6)H_(5)COCH_(3)

O A ,O Ba n dO C ,w i t hO as the origin, are three mutually perpendicular lines whose direction cosines are l_rm_ra n dn_r(r=1,2a n d3)dot If the projection of O Aa n dO B on the plane z=0 make angles varphi_1a n dvarphi_2, respectively, with the x-axis, prove that tan(varphi_1-varphi_2)=+-n_3//n_1n_2dot

Write the Newman projection formula of the following compounds (i) CI-CH_(2)-CH_(2)-CH_(3) in its most polar form. (ii) HO-CH_(2)-CH_(2)-OH in its most stable form. (iii) HOOC-CH_(2)-CH_(2)-COOH in its least stable staggered form.

An unknown inorganic compound (X) gave the following reactions: (i) The compound (X) on heating gave a residue, oxygen and oxide of nitrogen. An aqueous solution of compound (X) on addition to tap water gave a turbidity which did not dissolve in HO_(3+) (iii) The turbidity dissolved in NH_(4)OH . Identify the compound (X) and gives equation for the reaction (i),(ii) & (iii)

Tartaric acid [HO_(2)CCH(OH)CH(OH)CO_(2)H] was an important compound in history of stereochemistry. Two naturally occuring forms of tartaric acid are optically inactive. One optically inactive form (P) has a melting point of 210- 212^(@) C and can be separated into two optically acitve forms, whereas other optically inactive form (Q) cannot be resolved further. Optically inactive form Q is