Nanogram [ng]
The nanogram is a metric unit of mass equal to one-billionth of a gram.
1 nanogram = 0.000000001 grams = 10⁻⁹ grams
1 nanogram = 10⁻¹² kilograms
Symbol: ng
Key Facts:
Used in fields like biochemistry, pharmacology, and environmental science to measure extremely small masses (e.g., toxins, DNA quantities)
The prefix "nano-" means 10−910^{-9}10−9 (one billionth)
Smaller than micrograms and widely used for precision measurements at molecular scales
The nanogram allows scientists to quantify minute amounts of substances with great accuracy.
The mass of the Earth is approximately 5.972 × 10²⁴ kilograms.
This massive value represents the total amount of matter contained in our planet, influencing gravity, orbital dynamics, and geological processes.
Summary:
Mass ≈ 5.972 × 10²⁴ kg
Determines Earth’s gravitational pull
Fundamental for planetary science and astronomy