Question

All formulas of chapter some basic concepts of chemistry

Answer 1

Answer:

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Answer 2

Answer:

• The matter is a substance that has mass and occupies space, e.g., water, air, box, table, etc.
• State of Matter: Solid, liquid, and gaseous states represent 3 specific states of remembering. The gaseous remember at very excessive temperatures includes gaseous ions and loose electrons and is known as the plasma country, i.e., the fourth country of remember.
• Homogenous: These have a uniform. composition throughout, e.g., factors and compounds. The combination also can be homogeneous.
• Heterogeneous: These do now no longer have uniform Entrance composition, e.g., a combination of iron filings and sulfur powder.
• Element: It is a substance that can not be in addition divided with the aid of using chemical methods. It is a natural substance and includes the simplest form of an atom. They are metals, non-metals, and metalloids (resemble each metallic and nonmetal), e.g., F, Al, Ni, Au, and Ag are metals. C, S, N2, and I2 are non-metals. B. Si, As, and Sb are metalloids. They are natural substances.
• Compound. It is a natural substance made from or greater factors blended in a fixed ratio, e.g., NaCl, FeS, CuSO4, H2O, etc. Its additives can not be separated with the aid of using easy bodily methods.

Formulas of the chapter some basic concepts of chemistry:

1. Relative atomic mass = mass of an element / 1/12× mass of an atom of carbon
2. Number of gram molecules=weight / gram molecular mass
3. Number of gram atoms= weight/gram atomic mass
4. Avogadro's number = 6.022×$10^2^3$
5. Mass of one atom of element=  atomic mass / Avogadro no.
6. Mass of one molecule of substance= molecular substance / Avogadro no.
7. Number of molecules in W of substance= weight × Avogadro number/ molecular mass
8. Mass % of an element in a compound= mass of the element in 1 mole of compound/molar mass × 100
9. Mass percent= mass of solute/mass of solution × 100
10. Molarity=  no. of moles of solute/mass of solvent (in kg)
11. Molecular mass=2* vapour density

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