Silicon and Germanium. You can conclude it from its position in the periodic table. Silicon and Germanium are in the same group of the Carbon. That implies that all three have the same number of electrons in the outer orbital, which is responsible for the bonds.
What table are you talking about exactly ?
The correct answer is 2Ca(s)+O_2(g)→ 2CaO(s).
Combustion of calcium in air calcium is Ca with O_2 (air)
Thus the equation is:
2Ca(s)+O_2(g)→ 2CaO(s)
Calcium and oxygen react at room temperature to generate a thin layer of CaO that shields the metal from further oxidation. When burned, calcium may ignite and react with both oxygen and nitrogen to produce calcium oxide (CaO) and calcium nitride (Ca3N2).
What is combination reaction ?
A chemical reaction known as a "combination reaction" occurs when two or more reactants combine to create a single product. Such a kind of reaction does not produce any byproducts. These processes are typically exothermic, which means heat is produced.
To learn more about combustion refer the link:
brainly.com/question/9641392
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Answer:
126 g/mol
Explanation:
The Formula of oxalic acid is H2C2O4. 2H2O. therefor, the equivalent weight of the acid is molecular weight (126 g/mol) when it is divided by n-factor (valency=2)which would be ,126/2 = 63. h
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