Which of the following chemical formula ls is not considered an element
a.) o^3
b.) i^2
c.) k^2o
d.)fe

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

How is it possible for someone to put an ear to a wall and hear someone in the next room?     a.sound waves can travel though solids.    b.the waves travel from room to room via air.    c.there must be some air in the wall so the sound can travel through it.    d.sound waves change to electromagnetic waves and then back again.

When using the ideal gas law constant 0.0821, what unit is used for volume? a) galloonb) ouncec) milliliterd) liter