The mass number of hydrogen is 2
The mass number of helium is 4
The mass number of boron is 7
Answer: It would be the element sulfur
Explanation:
The reason for that is because it is the same atom of sulfur. No other atoms are being added to it. A compound is various elements combined together.
Molecule, compound, compound, compound, compound, compound,compound, molecule
The correct answer is true, carbon monoxide is a common atmospheric pollutant. It is produced largely in combustion processes like in industries and in vehicles. It is a gas that cannot be seen nor smelled. Carbon monoxide is one of the major pollutant present in the world.
Answer:
Paper chromatography is a method used to distinguish or separate coloured substance mixtures.
In the image, take an example of colured chemical placed in a glass beaker. If a paper is placed in that chemical, coloured spots are separated and displayed on the chromatogram.
It was founded in 1944 A.D by a scientist called Erwin Cargaff.