Some Basic Concepts of Chemistry Set-2

Q1. If the moles of the solute are cancelled out by the total number of moles, the resulting quantity is:

Q2. What is the standard $\text{SI}$ unit of time?

Q3. Which law states that equal volumes of gases at the same temperature and pressure should contain equal number of molecules?

Q4. How many moles of water are present in $180\text{ grams of water } (\text{H}_2\text{O})$?

Q5. How many molecules are present in $10\text{ moles of water}$?

Q6. If a solution contains $10\text{g of } \text{NaOH}$ (Molar Mass $= 40\text{ g/mol}$) dissolved in $100\text{g of water}$, what is the number of moles of $\text{NaOH}$?

Q7. If the molality of an aqueous solution is $1\text{m}$, what is the mass of the solvent (water)?

Q8. The volume of pure water required to have a mass of $1000\text{ grams}$ is: (Density $1\text{ g/mL}$)

Q9. The relationship used when mixing two solutions (A and B) of the same substance to find the final molarity ($M_F$) and final volume ($V_F$) is:

Q10. What is the molar mass of Copper Sulphate $(\text{CuSO}_4)$? (Atomic weight $\text{Cu} = 63.5, \text{ S} = 32, \text{ O} = 16$)