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

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

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?
Calculate the mass in kg of 4.48 dm$^3$ carbon dioxide at STP.
A solution contains 10 g of NaOH dissolved in 500 mL of water. What is the molarity of the NaOH solution?
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:
The molality of solution containing $15.20\, g$ of urea, (molar mass = $60$) dissolved in $150 \,g$ of water is
If 1.202 g mL−1 is the density of 20% aqueous KI, determine the molality of KI.
All alkali metals are good dash agents?
In RNA, thymine is replaced by__________.