How do you know when the reaction between baking soda and an acid ingredient has ended

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false