You need to state a model number for an exact answer. There are many different Cessnas
There is not, and never has been a Cessna called 'Mustang'
how much fuel does a 406 Cessna take
20.3 gallons
There are many different kinds of Cessna so your question is un-answerable.
It depends on which Cessna you have, whether you have added auxiliary fuel tanks to it, and how much cargo and pax you are carrying.
They use about 8 gallons per hour in cruise flight.
I believe that would be the Cessna 150 which weighs in about 980 pounds
The 406's max weight is almost 10,000 pounds
The empty weight of a Cessna 150 is 1,111 lb (504 kg) the maximum takeoff weight is 1,600 lb (730 kg).
That depends on the model and year of the aircraft, and what equipment is installed. Cessna started building 172s in 1955, and has built more than 60,000 individual models of the airplane. Different engines, different radios & navigation equipment, different interiors all effect the weight of an individual airplane. The AVERAGE empty weight (no fuel in tanks) of a Cessna 172R, built from 1996 to 1998, is 1691 pounds.
You nust have a number wrong, there is no record of a Cessna 142
Depends on the model and optional fuel capacity, and gross weight. Other factors would include weather, such as wind, and how well the pilot manages the engine. So the smallest Cessna, a Cessna 150 for example, has a range of about 300 - 600 nautical miles, depending on fuel quantity, weight, etc. The larger Cessna 182 has a range of about 500 - 800 nm. The FAA rules also say all aircraft must land with at least 30 minutes of fuel on board, and 45 minutes for instrument flights. It gets a little more technical than that but this is the very basic answer.