Advertisements
Advertisements
प्रश्न
Four grams of caustic soda contains ______.
विकल्प
6.02 x 1023 atoms of it
4 g atom of sodium
6.02 x 1022 molecules
4 moles of NaOH
Advertisements
उत्तर
Four grams of caustic soda contains 6.02 x 1022 molecules.
Explanation:
40 g of NaOH contains 6.023 x 1023 molecules
So, 4 g of NaOH contains = `4/40 xx 6.02 xx 10^23`
= `1/10 xx 6.02 xx 10^23`
= 6.02 x 1022 molecules
संबंधित प्रश्न
What is the mass of 0.2 mole of oxygen atoms?
What name is given to the amount of substance containing this number of atoms ?
Explain the term:
Gram atom
Fill in the blank
One gram atom of an element contains ______ atoms.
Calculate the number of molecules in 12.8g of sulphur dioxide gas. Take Avogadro's number as 6 x 1023.
[S = 32, 0 = 16 ]
Calculate the mass of 0.1 mole of carbon dioxide.
[Atomic mass: S = 32, C = 12 and O = 16 and Avogadro's number = 6 × 1023]
How many grams of HCl are present in 0.1 mole of it?
What is Molar volume of a gas?
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.
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 | - |
