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explain zone refining method of purification of silicon
The only nonradioactive isotope of fluorine has 9 protons and 10 neutrons. a. What is its mass number. b. Write the full symbol of this atom.
Matter is anything that has mass and takes up space. The term matter refers to all the materials, or "stuff," making up the universe. Everything you see around you is matter. The c
Q. How do you determine the oxidizing or reducing agent? Ans. A substance that oxidizes another substance is called an oxidizing agent. One that reduces another substance
What does concentration exactly mean?
Explain Le Chateliers Principle Le Chatelier′s Principle is the principle when a stress is going to applied on a chemical system at equilibrium, the equilibrium will be shift t
The wave nature of an electron was first given by: (1) De-Broglie (2)Heisenberg (3)Mosley (4)Sommerfield Ans: De-Broglie
Metals: Iron : 1. Most automobiles, machine tools, building parts, the hulls of large ships, and machine parts are made out of iron. (Iron metal is strong but is quite
advantages of reversible reaction
In Heisenberg's uncertainty equation Δ x ×Δ p ≥ h/ 4 Π ; stands for: (1) Uncertainty in energy (2) Uncertainty in velocity (3) Uncertainty in momentum (4) Uncert
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