What is the mass of (a) 1 mole of nitrogen atoms? (b) 4 mole of aluminium atoms (Atomic mass of aluminium = 27)?

Answer is (b) It comes out with the CO2 during exhalation 

(a) Ammonia gas is formed  (b) Methane is formed

(a) Mass of one mole of oxygen atoms = 16g  Then, mass of 0.2 mole of oxygen atoms = 0.2 × 16g = 3.2g  (b) Mass of one mole of water molecule...

1 mole of aluminium oxide (Al2O3) = 2 × 27 + 3 × 16 = 102g  i.e., 102g of Al2O3 = 6.022 × 1023 molecules of Al2O3  Then, 0.051 g of Al2O3...

Molecular mass of CO2  = 1(C) + 2(O)  = 1(12) + 2(16)  = (1 × 12) + ( 2 × 16)  = 44 u  5 mole of CO2 = 5 × 44  = 220 gm  Molecular mass...

Atomic mass of Mg = 24  Atomic mass of S = 32  Ratio of Mg and S in Magnesium sulphide = 24:32 = 3:4  Mass ratio / Atomic mass of Magnesium (Mg) =...

Mass of 1 mole of aluminium atom = the molar mass of aluminium  = 27 g mol–1  An aluminium atom needs to lose three electrons to become an ion, Al3+  For one mole...

Electronic configuration of Nitrogen : 2,5 Oxygen: 2, 6 Fluorine: 2.7 (a) Fluorine (F) is most electronegative and nitrogen (N) is least electronegative. (b) Fluorine (F) has 7 valence electrons. (c) Valency of nitrogen is 3...

The properties of elements depend upon valence electrons in the atom which in turn depends on the total number of electrons, i.e., atomic number. Therefore, atomic number is a more appropriate parameter...

The conversion of atmospheric nitrogen into the nitrogenous compounds through the agency of living organisms is called biological nitrogen fixation. The process is carried out by two main types of...