What is the possible formula of AC if A has 2 valence electrons and C has 7 valence electron?

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

What do electromagnetic waves carry? how are they produced through which media can they move? where do they transfer energy? what do they not transfer? what do mechanical waves carry? how are they produced? through which media can they move? where do they transfer energy? what do they not transfer?

Malia was able to make a paper clip float on the surface of water what will most likely happen to the paper clip if a drop of dishwashing detergent is added near it