level: Using moles
Questions and Answers List
level questions: Using moles
| Question | Answer |
|---|---|
| What is meant by mole of a substance? | It is the amount that contains the same number of units as the number of carbon atoms in 12g of carbon-12 |
| What is the formula to find the mass of a given number of moles? | Mass of given number of moles is equal to mass of 1 mole multiplied by number of moles. |
| What are the conditions of room temperature pressure? | 20 C and 1 atmosphere |
| At RTP what is the volume occupied by gas? | 24dm cube |
| How do convert from cm cube to dm cube | Divide by 1000 |
| What is the formula used to calculate concentration? | Concentration is equal amounts of solute in moles divided by the volume of solution in dm cube |
| What is empirical formula? | Shows the simplest ratio in which the atoms in a compound are combined |
| What is the formula used to find the %yield? | actual mass obtained divided by calculated mass multiplied by 100 |