What is the combining ratio of potassium with bromine?
2 answers:
Answer: 1: 1
Explanation:
An ionic bond is formed when an element completely transfers its valence electron to another element. This bond is formed between a metal and a non-metal.
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
Here potassium forms a cation ion by loss of one electron and bromine forms an anion
by gain of one electron.Thus one
combine with one
to form neutral
.
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Answer:
a)
b)
c)
Explanation:
Hola.
Para resolver los numerales a), b) y c), debemos seguir los siguientes procedimientos:
a) En este caso, primeo calculamos la masa que 45.9 cm³ ocupan con una densidad 0.924 g/cm³ como se muestra a continuación:
Seguidamente, sabiendo que estos gramos ocupan 0.275 moles, podemos facilmente calcular la masa molar como la relación entre ellas:
b) En este caso, como se tienen 120 cm³ calculamos la nueva masa:
Luego, con la masa molar, las moles:
Finalmente, con el número de Avogadro, las moléculas presentes:
c) Aquí, consideramos que hay una molécula de la sustancia, por lo que usando el número de Avogadro, podemos calcular las moles que una molécula tiene:
Luego, usando la masa molar, calculamos la masa de una molécula:
¡Saludos!
A nuclear reaction involves the reaction of nuclei of atoms. This can be expressed in the form of nuclear equation in which the reactant nuclei are represented by their respective symbols carrying two numbers, the mass number denoted by A present at the top left and the atomic number (Z) written at the bottom left of the symbol of the element's nucleus.
The given nuclear reaction is the fusion of two isotopes of hydrogen, H-2 to form Helium-3 nucleus:
This reaction produces a single neutron.