Yakeen NEET 3.0 Mole Concept DPP-01

Sublimation Process

• Sublimation is a phase transition of a substance from solid to gas without passing through a liquid phase.
• Camphor and iodine can be separated by sublimation, while ammonium chloride and copper sulfate cannot.

Molecular Mass of C6H12O6

• The molecular weight of glucose (C6H12O6) is approximately 180 g/mol.
• Other mentioned weights include:
  • 3 × 10–22 g
  • 22 × 10–22 g
  • 132 g

Charge of Sulfide Ion (S2–)

• The charge corresponding to 96 amu of S2– is:
  • Option (1) 2 C
  • Option (2) 3.2 × 10–19 C
  • Option (3) 9.6 × 10–19 C
  • Option (4) 6 C

Atomic Mass Conversion

• The mass of one atom of an element is given as 8 × 10–24 g.
• This value can be converted to atomic mass unit (u):
  • 1 u equals approximately 1.66 × 10–24 g.

Valence Electrons in N3– Ion

• The total number of valence electrons in 2.8 g of N3– ion needs to be calculated.
• Valence electrons are crucial for understanding bonding and reactivity in chemical compounds.

Calculation of Weight of Nitrogen Molecules

• To calculate the weight occupied by 12.04 × 10^24 molecules of N2(g), one needs to use Avogadro's number and the molar mass of nitrogen.
• This illustrates the relationship between the number of molecules and mass in moles.