I have no idea how to do these

Scratch paper for partial credit on incorrect answers) Preparing a dilution with a particular dilution and volume Dilution factor = x/amount needed or cross multiply divide How would you prepare 250ml of a 1/300 dilution of a cell suspension? Click or tap here to enter text. cells Click or tap here to enter text. dilutent How would you prepare 23 ml of a 3/5 dilution of solution Q? Click or tap here to enter text. Solution Q Click or tap here to enter text. Dilutent Calculating the concentration of solute after diluting stock solutions Rule 1: Concentration of substance in a diluted sample = Original concentration of substance * dilution If you prepare a 1/40 dilution of a 50% solution, what is the final concentration of the solution? Click or tap here to enter text