Mass is equal to protons plus neutrons
To find the protons its the atomic number
Answer:
H+ + Cl- + OH- + Ca2+ -> Na+ + Cl- + H2O
Explanation:
I would say C. petroleum
A is wrong
B is impractical for "mainly used"
D thats too expensive
Answer:
single replacement
Explanation:
If it has one plus sign it is decomposition or synthesis
however if it has two plus signs then it is single or double replacement
