How do you determine which formula for a compound is not a correct formula?
For example, this is my problem I'm trying to Which of the following is NOT a correct formula?
These are my options:
-Mg2HPO4
-HCIO4
Fe(CIO2)3
Fe(CIO2)3
Ca(NO2)2
Lil
H3PO4

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2

What causes most sediment to wash or fall into a river