The Mass of ¹²C Is 12 U Where 1 U

question 87

Multiple Choice

The mass of ¹²C is 12 u where 1 u = 1.660 559 × 10−²⁷ kg.This mass is equal to

• A)the mass of the ¹²C nucleus.
• B)the mass of the ¹²C nucleus plus 6 electrons.
• C)the mass of the ¹²C nucleus plus 12 electrons.
• D)the mass of 6 protons and 6 neutrons.

---

Definitions:

Subsistence Agriculture

Farming practices aimed at self-sufficiency, producing enough food for the farmer's family, with little to no surplus for trade.

Tropical Forests

are dense forests found in the equatorial zone with a high level of biodiversity, characterized by high rainfall and constant warm temperatures throughout the year.

Second Green Revolution

An ongoing movement aiming to increase agricultural production worldwide, similar to the first Green Revolution, but with a focus on sustainability and environment-friendly practices.