Advertisements
Advertisements
प्रश्न
A flask contains 3.2g of sulphur dioxide.Calculate the following : The moles of sulphur dioxide present in the flask.
Advertisements
उत्तर
Moles = Weight of substance in grams/ molecular weight
So, Moles of SO2 = 3.2/64 = 0.05
APPEARS IN
संबंधित प्रश्न
What is the mass of 4 moles of aluminium atoms (Atomic mass of aluminium = 27)?
Fill in the following blanks :
60 g of carbon element are .............. moles of carbon atoms.
Define the term Relative atomic mass.
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
Consider the following reaction and based on the reaction answer the questions that follow :
\[\ce{(NH4)2Cr2O7 ->[heat] N2(g) + 4H2O(g) + Cr2O3}\]
Calculate :
(i) The quantity in moles of (NH4)2Cr2O7 if 63 gm of (NH4)2Cr2O7 is heated.
(ii) The quantity in moles of nitrogen formed.
(iii) The volume in litres or dm3 of N2evolved at STP.
(iv) The mass in grams of Cr2O3 formed at the same time
[Atomic masses : H = 1, Cr=52, N=14]
Define the term:
Mole
Find the number of molecules in 3.2 g of SO2.
How many grams of HCl are present in 0.1 mole of it?
Correct the statement, if required.
One mole of chlorine contains 6.023 x 1010 atoms of chlorine.
Calcium chloride when dissolved in water dissociates into its ions according to the following equation.
\[\ce{CaCl2} (aq) → {Ca^{2+} (aq) + 2{Cl}- (aq)}\]
Calculate the number of ions obtained from CaCl2 when 222 g of it is dissolved in water.
