List of top Chemistry Questions on Mole concept and Molar Masses asked in MHT CET

Total pressure of the solution is 500, the partial pressure of component A is 400, and the partial pressure of component B is 575. What is the mole fraction of component B?
A solution contains 10 g of NaOH dissolved in 500 mL of water. What is the molarity of the NaOH solution?

Calculate the number of moles present in 9.10 × 1016 kg of water.

Calculate the mass in kg of 4.48 dm$^3$ carbon dioxide at STP.
What is the molar mass of the third member of the homologous series if the molar mass of the first member is 46 g?
Volume of a gas at NTP is \( 1.12 \times 10^{-7} \, \text{cm}^3 \). The number of molecules in it is: