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What is the relationship between mass and density?

The density of a given substance is constant, given constant conditions, regardless of the amount. Mass, on the other hand, is dependent on amount, as it is meaningless to try to define the mass of a substance without defining its volume and its environmental conditions.\nMass and density vary greatly between various elements and their compounds. An atom of hydrogen, the lightest element, has only one-quarter the mass of helium, the second lightest. Hydrogen tends to form molecules with two hydrogen atoms, but one of these molecules still weighs only half as much as a single helium atom. Becau..

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What are the pros and cons of petroleum?

Petroleum can deliver great benefits in terms of lower unemployment, more disposable income and greater economic growth. The industry stimulates millions of jobs and billions of dollars in economic investment and government revenues.\nIt can also benefit the environment by providing natural gas, its clean-burning byproduct, to power plants currently running on coal. Moreover, increased production reduces dependence on petroleum from less secure regions that operate under less stringent environmental controls, increasing national, economic and environmental security.\nIts disadvantages are that..

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How are fault-block mountains formed?

A fault-block mountain occurs when one side of a fault in the Earth's crust slides over another. The material from one side gets pushed upward while the other slides downward. These uplifted rocks form mountains over time and after a tremendous amount of intense pressure.\nThe force of seismic activity causes large blocks to thrust up and even sideways on one side of the fault. The other side forms a depression into the ground. This steep depression erodes over time and flattens out as material from the uplifted portion falls into the depression.\nThe Sierra Nevada Mountains of the Wester..

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What is the most common state of matter in the universe?

The sun contains more than 99 percent of the mass in the solar system. While some of its mass is in a gaseous state, the overwhelming majority is in plasma form. However, baryonic matter, which is made of atoms and subatomic particles, comprises only 4.6 percent of the universe's mass. Dark matter, which is not well understood, makes up 24 percent of the universe's mass, and the remaining 71 percent consists of dark energy, which is a mystery.

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What are multicellular algae?

The classification system of algae changes as scientists learn more about them. Marine algae come in many shapes and sizes. The red algae are in the protist kingdom; the green algae belong to the chromist kingdom; and the brown algae are part of the plantae kingdom. These types of algae all have cell-wall structures and are capable of photosynthesis.

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What is a non-ionic detergent?

Dishwashing liquid is an example of a non-ionic detergent. It can be used for cleaning all types of surfaces and is particularly effective for removing grease and oil. Aside from not reacting with hard water ions, this type of detergent doesn't produce much foam, so it is easier to rinse. A disadvantage of non-ionic detergent is that it is more expensive than other types.

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What is the chemical formula for gold?

Gold is a highly valued metal that has been known about for roughly 5,500 years. It can sometimes be found on its own, but it is more often found mixed with silver, quartz, lead, zinc and copper. There is also approximately 1 milligram of gold dissolved in every ton of seawater, but it would cost more to extract it than the gold is worth. Gold is valuable because it is malleable, a good conductor of heat and electricity and does not tarnish when exposed to air. Plus, it sparkles which pleases jewelry lovers.

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How do you dehydrate CuSO4 5H2O?

The most common occurrence of CuSO4 in nature is as the pentahydrate, as a mineral scientists call chalcanthite; however, it exists in three other rare forms. Chalcocyanite is the anhydrous form, bonattite is the trihydrate and boothite is the heptahydrate. The water solubility of these minerals makes them unsuitable for use as gemstones.\nCopper sulfate is an effective agricultural fungicide. It is a common swimming pool additive due to its properties as an algaecide. It preserves wood in pressure treated lumber. About.com recommends purchasing the blue crystal form, which is available in hom..

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What is the law of inertia?

Sir Isaac Newton presented his three laws of motion for the first time in 1686 in "Principia Mathematica Philosophiae Naturalis." The first law, the law of inertia, states that an object's velocity will change only if there is an external force making it change.A good example of this law as seen in every day life is that of a kite flying in the sky. The kite will remain in the air, at its current velocity unless it is changed by the speed or direction of the wind. Another excellent example of Newton's first law is seen when a package is dropped out of a moving airplane. The package w..

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What is a primary stain?

Differences in thickness of the peptidoglycan layer of the cell membrane of bacteria makes it possible to distinguish Gram-positive from Gram-negative bacteria. Bacteria that are Gram-positive have a thicker peptidoglycan layer and are able to retain the primary color of crystal violet.\nGram staining is a three-step process that involves primary staining, decolorizing to dehydrate the peptidoglycan layer and secondary staining to determine the type of bacteria.

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