Advertisements
Advertisements
प्रश्न
Calculate the mass of 3.011 × 1024 atoms of carbon.
Advertisements
उत्तर
Number of carbon atoms = 3.011 × 1024
We know that 12g (atomic mass of carbon) of carbon contains 6.022 × 1023 carbon atoms.
Mass of 1 atom of carbon = 12/6.022 × 1023 = 1.99 × 10-23
Hence, mass of 3.011 × 1024 carbon atoms = 3.011 × 1024 ×1.99 × 10-23 = 59.9g or 60g (approximately)
APPEARS IN
संबंधित प्रश्न
Give the name of the element present in the following compound:
Hydrogen bromide
Write the formulae of the following compounds. Also name the elements present in them.
- Water
- Ammonia
- Methane
- Sulphur dioxide
- Ethanol
What do the following denote ?
- N
- 2N
- N2
- 2N2
What is the difference between the molecule of an element and the molecule of a compound ? Give one
example of each.
An element A forms an oxide A2O5.
What is the valency of element A ?
Why are the symbols and formulae of substances important?
Give a reason why –
Ozone is considered triatomic, but phosphorus a tetratomic molecule.
State the atomicity of the following:
Sulphur
Classify the following molecules as the molecules of element or compound
| 1. |  |
|
| 2. |  |
|
| 3. |  |
|
| 4. |  |
The Atomicity of phosphorous is ______
