Advertisements
Advertisements
प्रश्न
Define or explain the term
Avogadro's number
उत्तर
The number of atoms present in 12g (gram atomic mass) of C-12 isotope, i.e. 6.023 x1023 atoms.
APPEARS IN
संबंधित प्रश्न
State Avogadro's Law.
Define atomicity of a gas.
Choose the correct alternative :
The gas laws which relates the volume of a gas to the number of molecules of the gas is :
A gas cylinder contains 24 × 1024 molecules of nitrogen gas. If Avogadro's number is 6 × 1023 and the relative atomic mass of nitrogen is 14, calculate the mass of nitrogen gas in the cylinder.
State Avogadro's Law
Explain Why?
"The number of atoms in a certain volume of hydrogen is twice the number of atoms in the same volume of helium at the same temperature and pressure."
Samples of the gases O2, N2, CO2 and CO under the same conditions of temperature and pressure contain the same number of molecules x. The molecules of oxygen occupy V litres and have a mass of 8 g under the same conditions of temperature and pressure.
What is the volume occupied by:
- x molecules of N2,
- 3x molecules of CO,
- What is the mass of CO2 in grams?
- In answering the above questions, which law have you used?
The gases hydrogen, oxygen, carbon dioxide, sulphur dioxide, and chlorine are arranged in order of their increasing relative molecular masses. Given 8 g of each gas at STP, which gas will contain the least number of molecules and which gas the most?
State the atomicity of Hydrogen.
A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure. If the number of molecules of hydrogen in the cylinder is X, calculate the number of carbon dioxide molecules in the cylinder. State the law that helped you to arrive at the result.
