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Nitrogen gas, N2, makes up about 78% of the atmosphere.

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12y ago

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What are the 2 types of substances?

I'm a bit confused on the question, there are alot more than two types of substances in existence. If your asking about the Reactivity of substances they are broken into two categories, Acids and Bases. Acids have a ph of 6 or lower. Bases have a ph of 8 or higher. Neutrals have a ph of 7. A neutral is eather pure, clean water, or a mixture of both acid and base that balance out the ph of the substance.


How do you store sulphuric acid?

Sulfuric acid should be stored in a cool, well-ventilated area away from sources of heat or ignition. It should be kept in a tightly sealed container made of a chemically resistant material like polyethylene or glass. Additionally, it should be stored separately from incompatible materials to prevent reactions or spills.


Which family of elements are called basis of life?

Carbon, Hydrogen, Oxygen, Nitrogen. They can form the four moleccules Carbon dioxide(CO2), Water(H2O), Methane(CH4) and Ammonia(NH3). These four molecules are the 'brick' that build to make life.


How do they make red?

The color red is produced by a combination of light waves emitted at a wavelength of around 620-750 nanometers, stimulating a specific response in our eyes. Different materials can reflect or absorb light at these wavelengths to create the perception of red color. Pigments like cadmium red or dyes such as carmine extract are commonly used in manufacturing products like paint or fabric to achieve the color red.


What is the element name of the continent of Europe?

Africa - 30,300,000 sq km Antarctica - 14,000,000 sq km Asia - 44,700,000 sq km Australia - 7,686,850 sq km Europe - 9,940,000 sq km North America - 24,360,000 sq km South America - 17,770,000 sq km