Recognised as Gas mark

Gas mark 1/4

Gas 1/4
110 °C
very cool

Gas mark 1/4 is 110 °C or 225 °F, a very cool oven. In a fan oven use about 90 °C, since fan ovens are conventionally set 20 °C lower. The gas scale is not linear, so it is a lookup rather than a conversion.

Temperatures

Gas mark1/4

Celsius110 °C

Fahrenheit225 °Fthe conventional published figure, not a recomputed conversion

Fan oven90 °Cconventionally 20 °C below a conventional oven

Oven descriptionVery cool

Exact conversion of the Celsius figure230 °Frecipes round this to the published Fahrenheit value above

The scale

Position1 of 11

Step to the next mark10 °C

LinearNomarks 1 to 5 step by 10 °C, but 6 to 7 and 8 to 9 step by 20 °C

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Other gas marks

Also reads as

GaSmArK14 (chemical formula)

Formula
807.405 g/mol
17 atoms

GaSmArK14 has a molar mass of 807.405 g/mol, made up of 17 atoms across 4 elements: 1 × Ga, 1 × Sm, 1 × Ar, 14 × K.

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Molar mass

Molar mass807.405 g/mol

Total atoms per molecule17

Distinct elements4

Mass of one molecule1.3407275 × 10^-21 g

Molecules per gram7.4586369 × 10^20

Name

NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show

Composition by mass

Ga8.6%

Sm18.6%

Ar4.9%

K67.8%

Gallium (Ga)69.723 g/mol, 8.635%

Samarium (Sm)150.36 g/mol, 18.623%

Argon (Ar)39.95 g/mol, 4.948%

Potassium (K × 14)547.372 g/mol, 67.794%

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Elements in this formula

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