Answer:
K₃PO₄ + 3HCl ⇒ 3KCl + H₃PO₄
Explanation:
practice these, it gets easier. goal is to match the amount of reactants and products on both sides of the equation. cheers!
Answer:
To calculate the percent composition, we need to know the masses of C, H, and O in a known mass of C9H8O4. It is convenient to consider 1 mol of C9H8O4 and use its molar mass (180.159 g/mole, determined from the chemical formula) to calculate the percentages of each of its elements:
%
C
9
mol C
×
molar mass C
molar mass
C
9
H
18
O
4
×
100
=
9
×
12.01
g/mol
180.159
g/mol
×
100
=
108.09
g/mol
180.159
g/mol
×
100
%
C
60.00
%
C
Photon is a packet of light energy. Both photon and electron contribute mostly to the quantum mechanics of the atom. Every particle in quantum mechanical model is explained as dual natured, that is has both particle and wave nature. Photons exhibit wave light properties like diffraction, interference, etc.,At the same time they exhibit particle properties like having a definite momentum and position. Similarly electrons and other microscopic particles exhibit both particle and wave nature.
Therefore, the correct answer is:
Both photons and electrons display particle and wave-like behaviour.
The atomic number is the number of protons in an element or the number of electrons in an element.
Atomic number=number of protons=number of electrons
<span>Atomic number=atomic mass - number of neutrons</span>
Answer:
Because of its malleability.
Explanation:
Magnesium is alkaline earth metal.
It is present in second group.
It is shiny gray color metal.
It is lighter but strong.
Its density is 1.738 g/mL.
It is soft and can be malleable. Magnesium ribbons are also formed by stretching the magnesium metal and this is due to the malleability of magnesium.
Magnesium ribbon burns and produces heat.
It is used to make the many light weight products such as many parts of car, phone, laptop, luggage etc.
It is also used to remove the sulfur such as from iron and steel.
It is also used in fireworks.
It is also used in medicine such as for constipation.
It is used as antiacid for heart burn.
