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A chemical change takes place when one or more substances change into new substances. A chemical change is as well known as a chemical reaction. The emergence of new substances is the sign that a chemical reaction has occurred. In a chemical effect the substances present at the start are called reactants. The new substances which are formed in the reaction are called products. A chemical reaction is symbolized by a chemical equation which shows the relationship between reactants and products.
Q) Inside the sun four hydrogen nuclei combine to form a helium nucleus by which cycle? Ans) Proton-proton cycle.
what is electronic displacements?
What will happen if you mix nitrogen and hydrogen gas at room temperature? Explain your reasoning. Calculate the mole fraction of NH 3 that would form theoretically at 298.15
how is hydrogen peroxide storage in equatorial places (phil)? should it require 2-8 deg C? or ambient room? any special cabinets or equipment sof storing?
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which solution is formed when iodine solution ,copper sulphate and caustic soda are mixed?
what is the acidity of phenol?
why are lanthanides and actinides called innertransition metals
which factor on electron affinity depend?
1) A 100 mL 0.4M acetic acid soln is titrated with 0.5M NaOH. Write a reaction equation to work the following: a) What volume of the base would be required to reach the equivalenc
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