Hydrogen and oxygen combine in the ratio of 1 : 8 by mass to form water. What mass of oxygen

Non-metals combine with oxygen to form acidic oxides. For example:S(s)+O2(g) → SO2 (g)

(c) ozone and oxygen

The ionization enthalpy of hydrogen atom is very high (1312 kJ mol–1 ). Hence, it is very hard to remove its only electron. As a result, its tendency to exist...

(a) ‘X’ and ‘Y’ are C (carbon) and O (oxygen). These combine in ratio of 12:32 i.e., 3:8. ‘Z’ is CO2(carbon dioxide)  (b) ‘X’ is carbon (atomic number 6) so its...

Ratio of number of moles 1 /1 ∶ 8/ 16  Number of moles = Mass / Atomic mass Number of moles of hydrogen = 1/ 1 = 1  Number of moles of oxygen...

6CO2 + 6 H2 O Chlorophyll /Sunlight → C6 H12 O6 + 6O2  1 mole of glucose needs 6 moles of water  180 g of glucose needs (6×18) g of water  1 g...

(d) (i), (iii) and (iv)

The correct answer is (c). (d) (c) The kinetic energy of the oxygen molecule increases and that of the hydrogen molecule decreases.  (d) The kinetic energy of the hydrogen molecule increases and that...

(d) Coulomb repulsion does not allow the nuclei to come very close.

This is because hydrogen bonding is multidimensional in water whereas in HF it is linear.