Answer:
a. 4KCN
Explanation:
Four is a coefficient found in the chemical formula 4KCN.
KCN is potassium cyanides.
A coefficient is a number that is written before a chemical compound. It is usually used to balanced reaction expression.
Chemically such numbers indicate the number of moles or volume of that specie.
Since KCN is the only compound with 4 before it, so, the solution is KCN
Ciencia que estudia la composición y las propiedades de la materia y de las transformaciones que esta experimenta sin que se alteren los elementos que la forman.
Sirve para considerar la cantidad de espacio que un objeto puede llenar (densidad), medir la energía de los átomos (estado de la materia), analizar los resultados de la combinación de sustancias (reacciones), entre otras muchas cosas interesantes.
Answer:
The chemical formula of the gas is 
.
Explanation:
The difference between the container with gas and empty container is equal to the mass of the gas.
Let the gas be 
Mass of the gas = m
Molar mass of diatomic gas = M
Pressure of the gas = P = 1.80 atm
Volume of the gas = V = 4.6 L
Temperature of the gas= T = 27.0 C = 27.0 + 273 K = 300 K
Moles of diatomic gas = n = 
Using ideal gas equation:
Atomic mass of the element X = 
The element is nitrogen and the diatomic gas is .
A physical property is any property that is measurable whose value describes a state of a physical system.A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.Isotopes are variants of a particular chemical element which differ in neutron number, although all isotopes of a given element have the same number of protons in each atom.The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number (number of protons), electron configurations, and recurring chemical properties. A period is the name given to a horizontal row of the periodic table.a group is a column of elements in the periodic table of the chemical elements.
Answer:
kilograms
Explanation:
hope this helps, pls mark brainliest :D
