If an element, X, can form an oxide that has theformula X2O3, then element X would most likely be located on the Periodic Table in the same group as

(1) Ba (3) In

(2) Cd (4) Na

Why must sample spots be above the solvent in paper chromatography

How to tell if a compound is ionic or molecular?

Which term is used for the tendency of an object to resist a change in its motion? A. acceleration B. displacement C. momentum D. inertia

xrays are used to diagnose diseases of internal body organs. What is the frequency of an X ray with a wavelentgh of 1.15*10^-10

1What is one major difference between fossil fuels and biofuels? ABurning fossil fuels releases greenhouse gases; burning biofuels releases no greenhouse gases incorrect answer B Fossil fuels exist in unlimited supply;

How does phosphorus enter the human body?

When a reaction occurs between atoms with ground state electron configuration 1s2 2s1 and 1s2 2s2 2p5 the predominant type of bond formed is

How does heat transfer takes place between any two systems?

Hydrate name of CaCl2 * 8 H2O

Calculate the heat evolved from a mixture of 14.1 l of sulfure dioxide