Answer:
Step-by-step explanation:
Support a gas syringe with a stand, boss and clamp.
Using a measuring cylinder, add 50 cm 3 of dilute hydrochloric acid to a conical flask.
Add 0.4 g of calcium carbonate to the flask.
Every 10 seconds, record the volume of gas produced.
When the reaction is complete, clean the apparatus as directed by a teacher.