Advertisements
Advertisements
Question
Fill in the blank
One gram atom of an element contains ______ atoms.
Advertisements
Solution
One gram atom of an element contains quantity of element which weights equal to its gram atomic mass atoms.
APPEARS IN
RELATED QUESTIONS
Fill in the following blanks :
60 g of carbon element are .............. moles of carbon atoms.
If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the mass of one atom of oxygen.
Show by means of calculations that 5 moles of CO2 and 5 moles of H2O do not have the same mass. How much is the difference in their masses ?
What is meant by ‘a mole of carbon atoms’ ?
Which of the following correctly represents 360 g of water ?
- 2 moles of H2O
- 20 moles of water
- 6.022 × 1023 molecules of water
- 1.2044 × 1025 molecules of water
Calculate the weight of one molecule of oxygen.
[Avogadro’s number = 6 × 1023, O = 16 ]
Given that the relative molecular mass of copper oxide is 80, what volume of ammonia (measured at STP) is required to completely reduce 120g of copper oxide? The equation for the reaction is :
3CuO + 2NH3 → 3Cu + 3H2O + N2
How many grams of H2O are present in 0.2 mole of it?
Calculate the number of atoms in the following:
52 amu of He
Determine the number of molecules in a drop of water which weighs 0.09 g.
