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To convert Tg to tonnes: multiply by 10⁶. To convert Tg to Gg: multiply by 1,000.
1 Tg = 10¹² g = 10⁹ kg = 10⁶ tonnes = 1 megatonne.
For example, 1 Teragram (Tg) = 1.097769e+39 Electron Mass (rest) (mₑ).
| Teragram (Tg) | Electron Mass (rest) (mₑ) |
|---|---|
| 0.1 | 1.097769e+38 |
| 0.5 | 5.488846e+38 |
| 1 | 1.097769e+39 |
| 2 | 2.195538e+39 |
| 5 | 5.488846e+39 |
| 10 | 1.097769e+40 |
| 25 | 2.744423e+40 |
| 50 | 5.488846e+40 |
| 100 | 1.097769e+41 |
| 500 | 5.488846e+41 |
| 1000 | 1.097769e+42 |
The teragram equals 10¹² grams or one million tonnes (one megatonne).
1 Tg = 10¹² g = 10⁹ kg = 10⁶ tonnes = 1 megatonne.
To convert Tg to tonnes: multiply by 10⁶. To convert Tg to Gg: multiply by 1,000.
Global carbon budgets (~10,000 Tg C/year from fossil fuels), volcanic eruption plume masses.
Earth's atmosphere has a total mass of about 5.15 × 10⁶ Tg (5.15 × 10¹⁸ kg).
Confusing Tg with Pg (petagram): 1 Pg = 1,000 Tg. Climate papers use both — check carefully.
Global CO₂ emissions ≈ 36,000 Tg/year (or 36 Pg/year). This is a key climate number to remember.
The electron rest mass is the mass of a stationary electron, approximately 9.109 × 10⁻³¹ kilograms.
mₑ ≈ 9.109 × 10⁻³¹ kg = 5.486 × 10⁻⁴ u = 1/1836 of a proton mass.
To convert electron masses to kg: multiply by 9.1093837015 × 10⁻³¹.
Essential for electron microscope design, semiconductor physics, and laser technology.
The electron is about 1,836 times lighter than a proton. An electron's mass-energy equivalent (E=mc²) is 0.511 MeV.
Confusing electron mass with electron charge (e). Mass = 9.1 × 10⁻³¹ kg; charge = 1.6 × 10⁻¹⁹ C.
Key ratio: proton-to-electron mass ≈ 1,836. This ratio explains why electrons orbit nuclei rather than the reverse.



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