140
Conversion: 275°F → (275 - 32) × 5/9 °C =135°C For cooking purposes 275°F (gas mark 1) is converted at 140°C
That completely depends on the temperature of the water when the gas flame is first ignited, which you've neglected to mention.
51% of 140= 51% * 140= 0.51 * 140= 71.4
120% of 140= 120% * 140= 1.2 * 140= 168
between gas mark 3 and 4.
Gas mark 4.
140
gas mark 4
The equivalent gas mark would be 4, although all ovens vary so check the documentation that came with your own to be certain.
The answer is 190oC as can be seen from the below table:Fahrenheit Celsius Gas Mark 250°F 120°C Gas Mark ½ 275°F 135°C Gas Mark 1 300°F 149°C Gas Mark 2 325°F 162°C Gas Mark 3 350°F 176°C Gas Mark 4 375°F 190°C Gas Mark 5 400°F 204°C Gas Mark 6 425°F 218°C Gas Mark 7 450°F 232°C Gas Mark 8 475°F 246°C Gas Mark 9 500°F 260°C Gas Mark 9
4-5 gas Mark
Gas phase
300-450 Degrees (Fahrenheit) on a Gas BurnerThe temperature varies according to which setting is being used, eg275 Degrees Fahrenheit at Gas Mark One300 Degrees Fahrenheit at Gas Mark Two325 Degrees Fahrenheit at Gas Mark Three350 Degrees Fahrenheit at Gas Mark Four375 Degrees Fahrenheit at Gas Mark Five400 Degrees Fahrenheit at Gas Mark Six425 Degrees Fahrenheit at Gas Mark Seven450 Degrees Fahrenheit at Gas Mark Eight
4-5 gas Mark
300 degrees Fahrenheit is equivalent to gas mark 2.
I'm guessing you mean 350F, which is gas mark 4.