In order to balance both of the reactions you need to make sure that both sides of the reaction have the same number of atoms for each atom in order to follow conservation of mass.
KCl+F₂→KF+Cl₂
Notice how in the above reaction there are two chlorine atoms on the products side (right side) and only one atom of chlorine on the reactants side (left side). you want both the reactants and products side to have the same amount chlorine and to do this multiply KCl by 2. Fluorine however, has 2 atoms on the reactant side and 1 atom on the product side. to fix this multiply KF by 2. <span>Therefore the balanced reaction is: 2KCl+F₂→2KF+Cl₂
</span>notice how both sides of the reaction have equal numbers of each atom.
Mg+HCl→MgCl₂+H₂
the above reaction has 2 atoms of H on the products side and only 1 atom of H on the reactants side. That means you have to multiply HCl by 2. Now you have the equation Mg+2HCl→MgCl₂+H₂. As you can see now we have equal numbers of all the atoms on both sides which means that that is the balanced equation.
I hope this helps. Let me know if you have any further questions or need anything to be clarified.
Hello, There!
<h2>Question</h2>
Atom
Atomic theory of atoms:
Element:
Gas:
Liquid:
Magnetic field:
Particle:
Phase:
Plasma:
Scientific theory:
Solid:
Write the Meanings
<h2>
Answer</h2>
Atom: the basic unit of an element
Atomic theory of atoms: a theory that states that all matter is made of atoms that cannot be divided or destroyed
Element: a substance that cannot be broken down into a simpler substance
Gas: the state of matter that does not have a definite shape or a definite volume
Liquid: the state of matter that has an indefinite shape but a definite volume
Magnetic field: a region around a magnetic material or moving electric charge
Particle: a tiny piece of matter
Phase: a unique form of the existence of matter
Plasma: an ionized gas of positively and negatively charged particles
Scientific theory: an explanation for some naturally occurring event, developed from extensive observations, experimentation, and reasoning
Solid: the state of matter that has a definite shape and volume
Therefore, I hope this helps And Good Luck!
Answer: D
Explanation:
London forces become stronger as the atom in question becomes larger, and to a smaller degree for large molecules. [4] This is due to the increased polarizability of molecules with larger, more dispersed electron clouds. The polarizability is a measure of ease with which electrons can be redistributed; a large polarizability implies that the electrons are more easily redistributed. This trend is exemplified by the halogens (from smallest to largest: F 2 , Cl2 , Br 2 , I 2 ). The same increase of dispersive attraction occurs within and between organic molecules in the order RF<RCL<RBr<RI, or with other more polarizable heteroatoms. [5] Fluorine and chlorine are
gases at room temperature, bromine is a liquid, and iodine is a solid. The London forces are thought to be arise from the motion of electrons.
The question is incomplete, here is the complete question:
Solid cesium iodide has the same kind of crystal structure as CsCl which is pictured below: If the edge length of the unit cell is 456.2 pm, what is the density of CsI in 
The image is attached below.
<u>Answer:</u> The density of CsI is 
<u>Explanation:</u>
To calculate the density of metal, we use the equation:
where,
= density
Z = number of atom in unit cell = 2 (BCC)
M = atomic mass of CsI = 259.8 g/mol
= Avogadro's number = 
a = edge length of unit cell = 
(Conversion factor: 
)
Putting values in above equation, we get:
Hence, the density of CsI is
Answer:
It is <u>melting</u> which is a physical change.
Explanation:
