I think it’s 20 mol
Sorry if I’m wrong
Use the chart to help you look carefully at the numbers and the volumes to figure the questions out hope this helps
Answer:
THE CORRECT ANSWER IS COMMAND.HOPE IT HELP YOU
Both aluminum and chlorine have known charges, which are +3 and -1 respectively. To make them cancel each other out in charge, you would need 3 chlorine and for one aluminum, therefore

would be correct