Questions tagged 'mole-concept'

• Which one of the following pairs of gases contains the same number of molecules
  Category: chemical-aritmatic | Tags: mole-concept
• Number of gm of oxygen in 32.2 g $N{a_2}S{O_4}.10{H_2}O$is
  Category: chemical-aritmatic | Tags: mole-concept
• 250 ml of a sodium carbonate solution contains 2.65 grams of $N{a_2}C{O_3}$. If 10 ml of this solution is diluted to one litre, what is the concentration of the resultant solution (mol. wt. of $N{a_2}C{O_3}$=106)
  Category: chemical-aritmatic | Tags: mole-concept
• A molar solution is one that contains one mole of a solute in
  Category: chemical-aritmatic | Tags: mole-concept
• The number of oxygen atoms in 4.4 g of $C{O_2}$is approx.
  Category: chemical-aritmatic | Tags: mole-concept
• The volume occupied by 4.4 g of $C{O_2}$at STP is
  Category: chemical-aritmatic | Tags: mole-concept
• The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is
  Category: chemical-aritmatic | Tags: mole-concept
• One mole of calcium phosphide on reaction with excess of water gives
  Category: chemical-aritmatic | Tags: mole-concept
• 19.7 kg of gold was recovered from a smuggler. How many atoms of gold were recovered (Au =197)
  Category: chemical-aritmatic | Tags: mole-concept
• The total number of protons in 10 g of calcium carbonate is (${N_0} = 6.023 \times {10^{23}}$)
  Category: chemical-aritmatic | Tags: mole-concept

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