Answer:
a gas-collecting bottle and an electronic balance
Step-by-step explanation:
A gas - collecting bottle along with an electronic balance is required to record the complete data about any given gas ,
As , the gas produced from a certain reaction can easily be collected in a gas - collecting bottle , and to measure the mass of the of the gas produced is done by using an electronic balance .
Hence , from the options , the correct option is a gas-collecting bottle and an electronic balance .