Answer:
La tabla periódica, también conocida como la tabla periódica de elementos, es una visualización tabular de los elementos químicos, que están organizados por número atómico, configuración electrónica y propiedades químicas recurrentes. La estructura de la tabla muestra tendencias periódicas.
Explanation:
google definition
H2CO3->H2O+CO2
H2CO3=>H^+ + CO3^-
Answer : Option B) All atoms of a single substance are identical.
Explanation : The scientist John Dalton proposed the atomic theory which had the postulates as follows.
i) All matter/substances consists of indivisible particles known as atoms.
ii) Atoms of the same element/substance are similar in mass,shape and size, but differ from the atoms of other elements.
iii) Atoms obey the law of conservation of energy which says atoms cannot be created or destroyed.
iv) Atoms of different elements may combine with each other in a fixed, simple, whole number ratios to form any compound atoms.
v) Atoms of same element can combine in ratio with more than one to form two or more compounds.
vi) The atom is considered to be the smallest unit of matter that can take part in a chemical reaction
Wavelength is proportional to the period of the wave which means the greater the period, the longer the wavelength. energy is proportional to the amplitude or height of the waves. meanwhile, frequency is inversely proportional to the period of the wave function.
Answer:
Explanation:
The given reaction has been occurred when the copper being more reactive than that of the silver. Which will subsequently displace the silver cations present in it, (by reducing it to the elemental metal). Copper being itself will get oxidized to the copper (II) cation forming 
and dissolve in the solution. So, the final product formed with the silver metal will start precipitation out and giving the copper (II) nitrate as resultant in the solution.
