If an atomic number for an element is 15, what two facts do you know

Predict the molecular shape of methane. trigonal pyramidal bent linear tetrahedral trigonal planar (120°) Predict the molecular shape of the carbonate ion.

Choose the correct option for the redox reaction below : 8H + (aq) + MnO4 - (aq) + 5Fe2 + (aq) → Mn2 + (aq) + 5Fe3 + (aq) 4H2O (l) H + (oxidized or reduced) Answer 1 Choose ... MnO4 - (oxidizing or reducing agent) Answer 2 Choose ...

The number of moles of hydrogen that is needed to produce 0.253 mol of water

Why is the radius of a positive ion always less than the radius of its neutral atom? (A) the nucleus pulls the remaining electrons in closer. (B) The number of principal energy levels is always reduced.

What kind of hair shampoo can more efficiently clean hair, acidic or alkaline, why?

Choose the statement below that is TRUE. A solution will form between two substances if solute-solvent interactions are of comparable strength to the solute-solute and solvent-solvent interactions.

When liquid silver nitrate and liquid sodium chloride are combined, solid silver chloride forms along with a new liquid, sodium nitrate. Witch substance represents the precipitate? Silver nitrate silver chloride sodium chloride sodium nitrate

The summer season at Arica and Rio de Janeiro Occurs from approximately

What are the major function of the digestive system

What is a substance made of identical atoms called?