What is the percentage by mass of sulphur
In Alluminium tetra oxo sulphate 6​

Starch and are common polysaccharide carbohydrates found in plants. sucrose glycogen fructose cellulose

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

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.