Which is the weakest bronsted base? a)cf3ch2s b)ch3ch2nh^- c)ccl3ch2ch2o^- d)ch3ch2^-

Which statement accurately describes the relationship between air pressure, air density, or altitude? as altitude increases, pressure increases. as altitude increases, air density increases. air pressure and density are lowest at sea level. denser air exerts more pressure than less dense air.

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)