The bond angles depend on the number of lone electron pairs. For example, boron trichloride has no lone pairs, a trigonal planar shape and bond... View Article
A food chain refers to the order of events in an ecosystem, where one living organism eats another organism, and later that organism is consumed... View Article
Answer: An additive inverse of a number is known as the value, resulting in a zero value when added to the original number. In order to yield... View Article
Acid rain is one of the consequences of air pollution. It occurs when emissions from factories, cars or heating boilers contact with the water in... View Article
Lungs are sacks of tissue located just below the rib cage and above the diaphragm. They are an important part of the respiratory system and waste... View Article
Liquids flow because the intermolecular forces between molecules are weak enough to allow the molecules to move around relative to one another.... View Article
Calcium nitride, referred to as calcium azanidylidenecalcium in IUPAC nomenclature, is an inorganic compound with constituent elements calcium... View Article
Acids are classified as either strong or weak, based on their ionization in water . A strong acid is an acid which is completely ionized in an... View Article
Whole Numbers are simply the numbers 0, 1, 2, 3, 4, 5, ... (and so on). Integers are like whole numbers, but they also include negative numbers... View Article
Both molarity and formality express concentration as moles of solute per liter of solution. Formality is a substance’s total concentration... View Article
In geometry, a quadrilateral can be defined as a closed, two-dimensional shape which has four straight sides. A quadrilateral has 4 sides, 4... View Article
Mass usually refers to the amount of matter in an object, while density is the physical property of matter. The symbol for density is the Greek... View Article
Alveoli are tiny air sacs present in the lungs which appears as a bunch of grapes. These are also known as pulmonary alveoli. They mainly promote... View Article
According to the Aufbau principle, the electrons of an atom occupy quantum levels or orbitals starting from the lowest energy level, and... View Article
Molting, known technically as ecdysis, is literally a period of growth for insects. When one organism sheds something like hair, feathers,... View Article
A pH lower than 7 is acidic, while a pH higher than 7 is alkaline. In mathematical terms, pH is the negative logarithm of the molar concentration... View Article
The atmosphere is a mixture of nitrogen (78%), oxygen (21%), and other gases (1%) that surrounds Earth. High above the planet, the atmosphere... View Article
Atomic mass is the mass of an individual atom in atomic mass units. The molar mass of the element nitrogen is 14.0 g/mol. Molar mass of nitrogen... View Article
