Advertisements
Advertisements
प्रश्न
Deduce the number of molecules of the following compound in the given quantity.
8.8g carbon dioxide
Advertisements
उत्तर
Number of moles in CO2 = `("Mass of CO"_2" in grams")/"Molecular mass of CO"_2`
= `8.8/44`
= 0.2 mole
∴ 0.2 moles of CO2 contains = 0.2 × 6.022 × 1023 molecules = 1.2044 × 1023 molecules.
∴ The number of molecules in 8.8 grams of carbon dioxide is 1.2044 × 1023.
APPEARS IN
संबंधित प्रश्न
Calculate the molar mass of the following substance:
Nitric acid, HNO3
Convert into mole.
22 g of carbon dioxide
If the aluminium salt of an anion X is Al2X3, what is the valency of X ? What will be the formula of the magnesium salt of X ?
If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the mass of one atom of oxygen.
How many atoms are there in 0.25 mole of hydrogen ?
The ratio of moles of atoms in 12 g of magnesium and 16 g of sulphur will be :
What do you understand by the term mole? How many elementary units are in one mole of a substance?
Calculate the number of moles and number of molecules present in 1.4 g of ethylene gas. What is the volume occupied by the same amount of ethylene?
What is the value of molar volume of a gas at S.T.P?
Define or explain the term:
Relative atomic mass
Find the number of molecules in 3.2 g of SO2.
Calculate the number of particles in 0.1 mole of any substance.
How many grams of Al are present in 0.2 mole of it?
Determine the number of molecules in a drop of water which weighs 0.09 g.
The molecular formula for elemental sulphur is S8. In a sample of 5.12 g of sulphur:
How many moles of sulphur are present?
One mole of any gas occupies ______ ml at S.T.P.
Calcium chloride when dissolved in water dissociates into its ions according to the following equation.
\[\ce{CaCl2} (aq) → {Ca^{2+} (aq) + 2{Cl}- (aq)}\]
Calculate the number of ions obtained from CaCl2 when 222 g of it is dissolved in water.
Raunak took 5 moles of carbon atoms in a container and Krish also took 5 moles of sodium atoms in another container of same weight.
- Whose container is heavier?
- Whose container has more number of atoms?
Fill in the missing data in the Table
| Species Property | H2O | CO2 | Na atom | MgCl2 |
| No. of moles | 2 | - | - | 0.5 |
| No. of particles | - | 3.011×1023 | - | - |
| Mass | 36g | - | 115 g | - |
