Examlex
Unshared electrons are always shown in pairs around an atom.
Petroleum
A natural liquid found beneath the Earth's surface that can be refined into fuel, lubricants, and various types of petrochemicals.
Coal
A combustible black or brownish-black sedimentary rock, often mined for use as a fuel source in electricity generation and various industrial processes.
Unrestricted Submarine Warfare
A type of naval warfare in which submarines sink vessels such as freighters and tankers without warning, as opposed to attacks per prize rules (laws of war).
Pancho Villa's Raid
An attack conducted in 1916 by the Mexican revolutionary Pancho Villa on the American town of Columbus, New Mexico, leading to tension between the United States and Mexico.
Q15: What is the name given to the
Q26: When a closed-ended manometer is used for
Q37: _ is the number of waves passing
Q38: When an alkali metal combines with a
Q49: What does HDPE mean?
Q62: Which of these compounds is a strong
Q76: What is ΔH°<sub>rxn</sub> for the following reaction?
Q98: A flask containing neon gas is connected
Q103: What law states that energy can be
Q122: Indicate the type of hybrid orbitals used