The number of moles in 1.12 dm³ of CO2 gas at S.T.P is:
Number of atoms of oxygen present in 10.6g of Na2CO3 will be:
molecule contains maximum number of molecules at S.T.P:
The volume occupied by 8g oxygen gas at S.T.P is:
The relative atomic mass of chlorine is 35.5 the mass of 2 moles of chlorine gas is:
If the volume occupied by oxygen gas (O2) at STP is 44.8dm³, the number of molecules of O2 in the vessels are:
The number of carbon atoms in 1 mole of sugar (C12H22O11) are approximately:
In the reaction 2Na + 2H2O→ 2NaOH + H2, if 23g of Na reacts with excess of water, the volume of hydrogen gas (H2) liberated at STP should be:
Which of the following sample of substances contains the same number of atoms as that of 20g calcium:
Which of the following statement is incorrect?
For Avogadro's number, this statement is incorrect:
The minimum number of moles are present in:
Number of atoms in 60g carbon are:
Maximum number of molecules present in the following sample of gas: (a) (b) (c) 11 (d)
Generally actual yield is:
