The difference in the mass of 100 moles each of sodium atoms and sodium ions is 5.48002 g. Compute the mass of an electron.

Let two A.P's have the first terms a , a' and common difference d. Given that difference between their 100th  term is 100. then a + 99d - a' - 99d = 100 ⇒...

(a) 1 mole of iron (Fe) = 56 g (molar mass)  Since 56 g of iron = 1 mol  Therefore, 112 g of iron= 1/ 56 ×112 mol = 2 mol  (b) Molar...

(a) CO2 has molar mass               = 44g mol–1  5 moles of CO2 have molar mass = 44 × 5               ...

1 mole of oxygen atoms = 6.023×1023 atoms  ∴Number of moles of oxygen atoms =   2.58 ×1024 / 6.022×1023                             ...

(a) Mass of sodium atoms carried by Krish = (5 × 23) g = 115 g While mass of carbon atom carried by Raunak = (5 ×12) g = 60g...

A Mg2+ ion and Mg atom differ by two electrons.  103 moles of Mg2+ and Mg atoms would differ by  103 × 2 moles of electrons  Mass of 2 ×103 moles of electrons...

5.85 g of NaCl = 5.85/ 58.5= 0.1moles   or 0.1 moles of NaCl particle  Each NaCl particle is equivalent to one Na+ one Cl–  ⇒ 2 ions  Total moles of ions = 0.1 ×...

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...

8 corner × 1/8 atom per unit cell = 1 atom  There are four body diagonals in a cubic unit cell and each has two body centre atoms.  So, 4 × 2...

The atoms of X lose electrons whereas the atoms of Y gain electrons. Thus, there is transfer of electrons from atoms of X to atoms of Y. The bond formed...