91

The solubility of glucose in the water is 91 g/100 ml under 25 degree condition.

Fundamentally, solubility is the property of a solid, liquid, or gaseous chemical substance called solute to dissolve in a liquid solvent to form a homogeneous solution of the solute in the solvent. The solubility of a substance fundamentally depends on the used solvent as well as on temperature and pressure. The extent of the solubility of a substance in a specific solvent is measured as the saturation concentration where adding more solute does not increase the concentration of the solution.

180.16

Glucose is a monosaccharide (simple sugar) with formula C6H12O6 or H-(C=O)-(CHOH)5-H, whose five hydroxyl (OH) groups are arranged in a specific way along its six-carbon backbone. The molar mass is 180.16 g/mol

The name may refer to any of two stereoisomers, which are mirror images of each other. It usually means the isomer that is most common in nature, properly called D-glucose, dextrose, or grape sugar.

128.17052

Naphthalene, also known as naphthalin, bicyclo[4.4.0]deca-1,3,5,7,9-pentene or antimite is a crystalline, aromatic, white, solid hydrocarbon with formula C10H8 and the structure of two fused benzene rings. It is best known as the traditional, primary ingredient of mothballs.
The molar mass is 120.17052.
It is volatile, forming a flammable vapor, and readily sublimes at room temperature, producing a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass.

78.11

Benzene is an organic chemical compound with the molecular formula C6H6. It is sometimes abbreviated Ph H. The molar mass is 78.11 g/mol.

96485.3399

The Faraday constant (named after Michael Faraday) is the magnitude of electric charge per mole of electrons. It has the currently accepted value by multiplying Avogadro constant with elementary charge. Because of the formula, the unit is defined as C per mol.

1.602176487...×10^−12

The elementary charge, usually denoted as e, is the electric charge carried by a single proton, or equivalently, the absolute value of the electric charge carried by a single electron. This elementary charge is a fundamental physical constant.

6.6260689×10^−34

The Planck constant (denoted h), also called is a physical constant reflecting the sizes of quanta in quantum mechanics. It is named after Max Planck, one of the founders of quantum theory. The Planck constant was first described as the proportionality constant between the energy of a photon and the frequency of its associated electromagnetic wave

0.035

The average salinity of the Earth's oceans is about 35 grams of salt per kilogram of sea water (35 ‰). Most of this salt was released from volcanic activity or extracted from cool, igneous rocks.

12742

The average diameter of the reference spheroid of the Earth is about 12,742 km, which is approximately 40,000 km/π, as the meter was originally defined as 1/10,000,000 of the distance from the equator to the North Pole through Paris, France.

6371

The mean radius of the earth is 6,371 km.
The equatorial radius is 6,378.1 km and the polar radius is 6,356.8 km.

1/81

The Moon is exceptionally large relative to the Earth: a quarter the diameter of the planet and 1/81 its mass. It is the largest moon in the solar system relative to the size of its planet (although Charon is larger relative to the dwarf planet Pluto).

27.312582

The Moon makes a complete orbit around the Earth with respect to the fixed stars about once every 27.3 days (its sidereal period). However, since the Earth is moving in its orbit about the Sun at the same time, it takes slightly longer for the Moon to show the same phase to Earth, which is about 29.5 days (its synodic period).

525600

In non-leap year, the total minutes of the year is 525,600 minutes. This number became famous for the movie "Rent".

60

The Egyptians subdivided daytime and nighttime into twelve hours each since at least 2000 BC, hence the seasonal variation of their hours. The Hellenistic astronomers Hipparchus (c. 150 BC) and Ptolemy (c. AD 150) subdivided the day sexagesimally and also used a mean hour (1 24 day), simple fractions of an hour (1 4, 2 3, etc.) and time-degrees (1 360 day or four modern minutes), but not modern minutes or seconds.

86400

Early definitions of the second were based on the apparent motion of the sun around the earth. The solar day was divided into 24 hours, each of which contained 60 minutes of 60 seconds each, so the second was 1 86 400 of the mean solar day.

0.999...

In mathematics, the repeating decimal 0.999... denotes a real number that can be shown to be the number one. In other words, the symbols 0.999... and 1 represent the same number.

The proof is very simple; 1/3 equals to 0.333..., 1/3 x 3 equals to 1, and 0.333... x 3 equals to 0.999..., therefore 0.999... equals to 1.

So amazing equation.

0.001

A per mille is a tenth of a percent or one part per thousand.

This is commonly used for birth to death ratio, and the proportion of the metal in instrumentals.

0.0001

A basis point (often denoted as or bp; rarely, permyriad, colloquially referred to in the plural as "bips") is a unit equal to 1/100th of a percentage point. Put another way: 1 bp = 0.01%

It is frequently, but not exclusively, used to express differences in interest rates of less than 1% per year. For example, a difference of 0.10% is equivalent to a change of 10 basis points.

415

In the period instrument movement, a consensus has arisen around a modern "baroque pitch" of 415 Hz.

440

The frequency of the sound A is usually set to 440Hz. This is commonly used all of the world.

The American music industry reached their own informal compromise of 440 Hz in 1926, and used it in instrument manufacturing. In 1936, the American Standards Association recommended that the A above middle C be tuned to 440 Hz. This standard was taken up by the International Organization for Standardization in 1955 (and was reaffirmed by them in 1975) as ISO 16.

1482

In fresh water, at 20 °C, the speed of sound is approximately 1,482 metres per second.

343.2

The speed of sound is the distance traveled during a unit of time by a sound wave propagating through an elastic medium. In dry air at 20 °C, the speed of sound is 343.2 metres per second.

299,792,458

The speed of light, usually denoted by c, is a physical constant important in many areas of physics. Light and all other forms of electromagnetic radiation always travel at this speed in empty space (vacuum), regardless of the motion of the source or the inertial frame of reference of the observer. Its value is exactly 299,792,458 metres per second.

1024

Multiplying 2 for 10 times becomes 1024. This is nearly number of 1,000, so used in computer. And the numbers are separated with this unit; 1,000 equals to kilo, 1,000,000 equals to mega, 1,000,000,000 equals giga and 1,000,000,000,000 equals tera. But because of this approximation, there is a little difference, error, between two numbers; 1 kilo byte is not 1,000 byte but 1,024 byte, and 1 mega byte is 1,048,576 byte.

6.02214179(30)×10^23

In chemistry and physics, the Avogadro constant (symbols: L, NA) is defined as the ratio of the number of entities (usually atoms or molecules) N in a sample to the amount of substance n (unit mole) through the relationship NA = N/n. Thus it is the proportionality factor that relates the molar mass of an entity, i.e. the mass per amount of substance, to the mass of said entity. The Avogadro constant expresses the number of elementary entities per mole of substance and it has the value 6.02214179(30)×10^23

1.38 x 10^-23

The Boltzmann constant is the physical constant relating energy at the individual particle level with temperature observed at the collective or bulk level. It is the gas constant R divided by the Avogadro constant NA.

It has the same units as entropy. It is named after the Austrian physicist Ludwig Boltzmann.

8.314472

In thermodynamics, the equation of states is defined as PV = nRT; P is the pressure, V is the volume, n is the number of moles of substance, R is the ideal gas constant, and T is the temperature.

R is defined as 8.314472 J/(mol Kelvin)

22.414

The volume of every gas with 1 molar volume is 22.414 liter under 1 atmosphere pressure and 0 degree in Celsius.

0.01

In thermodynamics, the triple point of a substance is the temperature and pressure at which three phases (for example, gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium.

Triple point of water is 0.01 degree in Celsius.

273.16

Kelvin is the scale for measuring the temperature. The difference between Celsius and Kelvin is about 273.16 degree.

By the way, the temperature of the space is about 3 Kelvin, minus 270 degree in Celsius. This is because that there is few objects to transfer the heat and wave in the space.

26

1966 February 26th Apollo Program: Launch of AS-201, the first flight of the Saturn IB rocket.