A mixture of CaCO3CaCO_3CaCO3 and MgCO3MgCO_3MgCO3 weighing 1.84 g on heating leaves a residue weighing 0.96 g. If the percentage by mass of CaCO3CaCO_3CaCO3 in the original mixture is x%, what is the value of x/2?
27.18
32.50
41.25
54.35
Related Questions
One mole of CO2\;{\rm{C}}{{\rm{O}}_2}CO2 contains:
6.02imes1023atoms of C6.02 imes {10^{23}}{\rm{atoms}}\;{\rm{of}}\;{\rm{C}}6.02imes1023atomsofC
6.02imes1023atoms of O6.02 imes {10^{23}}{\rm{atoms}}\;{\rm{of}}\;{\rm{O}}6.02imes1023atomsofO
3.01imes1023molecules of CO23.01 imes {10^{23}}molecules\;of\;C{O_2}3.01imes1023moleculesofCO2
None of the above
Number of atoms in 3 mol of NH3N{H_3}NH3
7.22imes10247.22 imes {10^{24}}7.22imes1024 atoms
7.22imes10237.22 imes {10^{23}}7.22imes1023 atoms
7.22imes10257.22 imes {10^{25}}7.22imes1025 atoms
All of these
Oxidation number of carbon in carbon suboxide is :
+23 + \frac{2}{3}+32
+43 + \frac{4}{3}+34
+4 + 4+4
−43 - \frac{4}{3}−34
