Recognised as Paper size
C7
- 81 × 114 mm
- ISO C
C7 measures 81 × 114 mm, or 3.19 × 4.49 inches. Its aspect ratio is 1.4074:1, close to √2, the property that makes each ISO size two of the next one down.
The canonical address for this page is /paper-c7.
Dimensions
Millimetres81 × 114 mm
Centimetres8.1 × 11.4 cm
Inches3.189 × 4.488 in
Points (72 dpi)229.6 × 323.1 ptthe PostScript/PDF unit
Area0.00923 m²9,234 mm²
Aspect ratio1.40741:1√2 is 1.41421
At common print resolutions
72 dpi230 × 323screen preview
150 dpi478 × 673draft print
300 dpi957 × 1346standard print quality
600 dpi1913 × 2693high quality print
The ISO 216 series
SeriesISO C
Halving ruleCut the long side in half to get the next size downthe √2 ratio is what makes this preserve the shape
Sheets of A4 in this sizeNot applicable
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Also reads as
PaPErC7 (chemical formula)
- Formula
- 513.351 g/mol
- 10 atoms
PaPErC7 has a molar mass of 513.351 g/mol, made up of 10 atoms across 4 elements: 1 × Pa, 1 × P, 1 × Er, 7 × C.
Molar mass
Molar mass513.351 g/mol
Total atoms per molecule10
Distinct elements4
Mass of one molecule8.5243939 × 10^-22 g
Molecules per gram1.1731039 × 10^21
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
Pa45%
P6%
Er32.6%
C16.4%
Protactinium (Pa)231.04 g/mol, 45.006%
Phosphorus (P)30.974 g/mol, 6.034%
Erbium (Er)167.26 g/mol, 32.582%
Carbon (C × 7)84.077 g/mol, 16.378%
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