List of top Chemistry Questions on Mole concept and Molar Masses asked in AP EAMCET

The \(\Delta T_b\) value for 0.01 m KCl solution is 0.01 K. What is the Van’t Hoff factor? (Kb for water = 0.52 K kg mol\(^{-1}\))
Identify the correct equation relating \( \Delta H \), \( \Delta U \), and \( \Delta T \) for 1 mole of an ideal gas (R = gas constant):
200 g of 20\% w/w urea solution is mixed with 400 g of 40\% w/w urea solution. What is the weight percentage (w/w \%) of resultant solution?
At 293 K, methane gas was passed into 1 L of water. The partial pressure of methane is 1 bar. The number of moles of methane dissolved in 1 L water is
(K$_H$ of methane = 0.4 kbar).
The concentration of 1L of \( CaCO_3 \) solution is 1000 ppm. What is its concentration in mol \( L^{-1} \)?
(Ca = 40 u, O = 16 u, C = 12 u)
At \( T(K) \), the \( P, V \) and \( u_{{rms}} \) of 1 mole of an ideal gas were measured. The following graph is obtained. What is its slope (\( m \))? (x-axis = \( PV \); y-axis = \( u_{{rms}}^2 \); \( M \) = Molar mass) \includegraphics[]{126.png}

The mass of mole substance in gram is called? 
 

The number of moles of solute present in the solutions of $I, II$ and $III$ is respectively I. $500 \,mL$ of $0.2\, M\, NaOH$ II. $200 \,mL$ of $0.1 \,N \,H _{2} SO _{4}$ II. $6 g$ of urea in $1 \,kg$ of water
From the given reaction \(2KMnO_{4} + 3H_{2}SO_{4} + 5H_{2}O_{2} \rightarrow K_{2}SO_{4} + 2MnSO_{4} + 8H_{2}O + 5O_{2}\)
Find the normality of \(H_{2}O_{2}\) solution, if \(20\text{mL}\) of it is required to react completely with \(16\text{mL}\) of \(0.02\text{M}\), \(KMnO_{4}\) solution. (Molar mass of \(KMnO_4 = 158\text{g mol}^{-1}\))