Advertisements
Advertisements
प्रश्न
One of the following elements has an atomicity of ‘one’. This element is :
विकल्प
helium
hydrogen
sulphur
ozone
उत्तर
Helium
The atomicity of Helium (He) is 1.
APPEARS IN
संबंधित प्रश्न
Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?
What is the mass of 4 moles of aluminium atoms (Atomic mass of aluminium = 27)?
How many moles are there in 34.5 g of sodium ? (Atomic mass of Na = 23 u)
Explain the term : Gram atom
The equation for the burning of octane is:
\[\ce{2C8H18 + 25O2 -> 16CO2 + 18H2O}\]
How many moles of carbon dioxide are produced when one mole of octane burns?
A student puts his signature with a graphite pencil. If the mass of carbon in the signature is 10-12 g, calculate the number of carbon atoms in the signature.
Four grams of caustic soda contains ______.
Calculate the number of moles in 1.51 × 1023 molecules of NH4Cl.
How many grams are there in the following?
2 moles of the hydrogen molecule, H2.
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 | - |
