SI Units

Mol

Definisi

Satuan dasar SI untuk jumlah zat, didefinisikan sebagai tepat 6,02214076×10²³ entitas elementer (atom, molekul, ion, dll.).

Penjelasan

One mole of carbon-12 atoms has a mass of exactly 12 grams. The number 6.02214076×10²³ is Avogadro's number, fixed by the 2019 SI redefinition. A mole of water molecules (18 g) fits in about 18 mL — a tablespoon. Chemists use moles because atoms are too small to count individually, but a mole provides a practical laboratory-scale quantity.

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RELATED TERMS

Meter

Satuan dasar panjang dalam SI, didefinisikan sebagai jarak yang ditempuh cahaya dalam 1/299.792.458 detik.

Kilogram

Satuan dasar massa dalam SI, didefinisikan berdasarkan konstanta Planck.

Detik

Satuan dasar waktu dalam SI, didefinisikan berdasarkan atom sesium-133.

Kelvin

Satuan dasar suhu dalam SI, dimulai dari nol mutlak.

Ampere

Satuan dasar arus listrik dalam SI.