Science

Refine Search

Is sucrose soluble in ethanol?

Potassium chloride and sodium are also partially able to be dissolved in ethanol. Sugar can be dissolved slightly in water to get a supersaturated solution to make the popular treat rock candy, according to Chemistryland.com. Salt is also very soluble in water. However, when the water is heated to the point that it starts to evaporate, the water cannot hold its solution due to there being too much salt. This results in the formation of salt crystals.

Continue Reading

How many hours are in a day on Mercury?

Mercury is the closest planet to the sun, and the smallest of the eight planets in the solar system. The temperature on Mercury ranges from minus 180 degrees Celsius at night to 430 degrees Celsius during the day. It has a similar size and terrain to Earth's moon, which is rocky, solid and marked by craters. It has no moons or rings, and was named after the messenger of the gods in Roman mythology.

Continue Reading

What does "projectile" mean in physics?

The movement of a projectile is divided into two perpendicular components: the horizontal and the vertical. A projectile shot anywhere between these two directions will have some motion in both directions and a curved trajectory. The path followed by the projectile after being fired is known as its trajectory. The range of a projectile is the horizontal distance covered by it.

Continue Reading

What is the difference between a solar and lunar eclipse?

Solar eclipses are total, partial or annular. A total eclipse occurs when the Sun is blocked entirely. In a partial eclipse, only a portion of the Sun is blocked. An annular eclipse occurs when the Moon is in orbit at its farthest point and the sun causes a ring of light to appear around the Moon.\n\n\nLunar eclipses occur at night and only when the Moon is directly opposite the Sun. A lunar eclipse is easier to see than a solar eclipse because the Moon is much closer to the Earth. Watching a lunar eclipse is possible without wearing eye protection. A solar eclipse happens during the day and i..

Continue Reading

How many muscles does it take to speak?

The tone present in the voice of the speaker shows many different possible things, one of such example being the current emotional state, and is changed in regards to the rapidity of the muscle movement. Humans can output around fourteen sounds per second, while particular components of the speech process, such as those in the tongue, lips, and jaw cannot create more than two actions per second.\nThe facial muscles play possibly the most important role in the articulation of speech and the transmission of emotions through it. The frontalis muscle is in the forehead and is only used for facial..

Continue Reading

What is the orbital diagram for sulfur?

Sulfur's electron configuration is 1s22s22p63s23p4. An orbital diagram illustrates how the electrons pair off in each orbital. Electrons are first placed in lower energy levels before the higher energy levels. Hund's Rule states that one electron must be placed in each orbital of a particular energy level before a second electron is placed in the same orbital.

Continue Reading

What is old age?

The label "senior citizen" is often applied to Americans age 65 and older. Many retirement programs kick in at this age. Senior citizens also receive discounts on purchases at some restaurants and retail stores. A Pew Research study in 2009 indicated that the average respondent believed old age starts at 68. The survey also showed that older people believed old age started at a later point than younger respondents.

Continue Reading

What type of magma does Mt. Vesuvius have?

The magma of Mt. Vesuvius is less dense than the surrounding rock, and when it rises to the top, the explosions are gigantic. This pyroclastic flow travels in excess of 100 mph, spitting solid and molten rock and sending gases and ash miles into the atmosphere. The most powerful recorded explosion decimated the city of Pompeii in 62 AD. According to National Geographic, the magma is closer to the surface today and may result in a less destructive explosion if it happens today.

Continue Reading

What is the second-largest planet in the solar system?

Like Jupiter, the largest planet, Saturn is a gas giant that lacks a solid surface. The planet is made up almost entirely of hydrogen and helium with some trace elements present in small quantities. Space.com reports that Saturn has 53 moons, which is the highest number known for any planet, and rings made predominantly of dirty ice. It is also the second-fastest spinning planet, with Jupiter being the fastest.

Continue Reading

What the differences between a virion and a virus?

The University of Cape Town draws an analogy between human spacecraft and virions. Just as a spacecraft ferries humans through inhospitable places, virions keep the genetic material of a virus safe until it can find a host cell. Virions are composed almost entirely of nucleic acids and proteins. Virions occur in a variety of shapes. Some virions are classified as simple helical or simple isometric structures, while others are classified as having complex or enveloped structures.\nIn 1983, a scientist by the name of Bandea suggested that viruses do not have an inherent morphological structure. ..

Continue Reading
Showing 1431 to 1440 of 10000 (1000 Pages)