Answer:
The balance equation of Ca(OH)2 + HCl ---> CaCl2 + H2O
is
Ca(OH)2(s) + <u>2</u>HCl(aq) ---> CaCl2(aq) +<u>2</u>H2O (l) (balanced equation)
Answer:
Protons = 89
Neutrons = 142
Electrons = 89
Option C
Explanation:
Hello,
Were required to find the proton, neutron and electron of an element Y
The atomic mass of element Y is composed of the protons and neutrons while the atomic number is the exact amount of protons present in the element.
Element = ₈₉²³¹Y
Atomic number = 89
Number of protons = 89
Number of electrons = 89
Atomic mass = 231
Atomic mass = protons + neutrons
231 = 89 + neutrons
Neutrons = 231 - 89
Neutrons = 142
Therefore the number of protons is 89, number of neutrons is 142 and number of electrons is 89.
Note: for an electrically neutral atom, the number of protons must be equal to the number of electrons
1. Solids
2. Liquids and or Gases
3. Radiation can pass through anything as long as it will allow it to pass through
Answer:
The answer is Chemical nomenclature
Explanation:
"IUPAC is best known for its works standardizing nomenclature in chemistry"