For a half-reaction in an acidic solution, which substances should you add to balance the equation?

A. H + and H20

B. H + and OH-

C. H20 and NO2

D. OH-

Why don't the inert gases easily react with other elements?

5 adjectives for metal

Which substance produced in the laboratory is used as a post exposure preventative measure against rabies?

If 3.45 grams of Mg are burned how many grams of MgO are produced

A pitcher pitches a ball to a waiting batter and the batter hits a pop fly deep into the outfield where it is caught. Which of these has the most kinetic energy? A. the baseball right as it hits the bat B. the baseball right as it leaves the bat C.

When electrons are removed from the outermost shell of a calcium atom, the atom becomes A) an anion that has a larger radius than the atom. B) an anion that has a smaller radius than the atom. C) a cation that has a larger radius than the atom.

A molecule of an unsaturated hydrocarbon must have 1) at least one single carbon-carbon bond 2) at least one multiple carbon-carbon bond 3) two or more single carbon-carbon bonds 4) two or more multiple carbon-carbon bonds

A 8.85 g sample of hydrate of sodium carbonate, Na2CO3 ∙ XH2O was heated carefully until no more mass was lost from the sample. After heating, the final weight of the material was 7.55 g. How many moles of water left the compound? 0 moles

PF3Br2 is a nonpolar molecule. Based on this information, determine the F-P-F bond angle, the Br-P-Br bond angle, and the F-P-Br bond angle. Enter the number of degrees of the F-P-F, Br-P-Br, and F-P-Br bond angles, separated by commas (e. g.

Using your periodic table identify the radioactive isotope;