Answer:
See below
Explanation:
Each metal oxide reacts with HCl to form water and the metal chloride

Answer:
dont go to any taco bells in Michigan!! There have been numerous cases of Ligma that have been traced back to Taco Bells across Michigan
Explanation:
Answer:
4- radioactive isotopes
Explanation:
I don't remember exactly but this question was on the regents
In my opinion the answer is D
Mass of X₂O₇ = 54,9g
2x + 33,6g = 54,9g
2x = 54,9g - 33,6g
2x = 21,3g | :2
x = 10,65g/mol