how much carbon is emitted from 1hour use of gas and 1hour use of electricity?

Answer 1

'1 hour use' is not a suitable measure as you do not specify the amount of energy consumed or how the gas or electricity was obtained.
If you are using equivalent energy amounts you would be nearer an answer however you still have problems. For example: the electricity generated from Hydro electric power - does not emit carbon directly but it still does so indirectly - you have to ask how much carbon was used to build the dam and the network that takes the power to the user. Further how much did the dam change the carbon emissions of the local area and finally how much carbon does it take to maintain the plant and how much energy will the plant generate during its lifespan. This also applies to the production of gas. Finally you may want to look at the economic impact - such as in the building of the hoover dam which by many accounts helped bring the US and therefore the rest of the world out of recession. With prosperity comes greater production and therefore greater emissions of carbon.

Answer 2

Less carbon is emitted from gas as it is direct heating guessing about 50% carbon efficient after transmission costs taken into acount, wheras electricity has burned much more carbon - much less efficient once mining, transport, generation, transmission, and converision to usable heat is taken into acount

The trouble is, that natural gas reserves are seriously depleted and we become more and more reliant on russia for supply, pushing the cost of transmission up and hence carbon emission

Answer 3

Depends on the power stations.