Which of the following elements has the strongest attraction for electrons?

a. oxygen

b. sulfur

c. aluminum

d. boron

Which of the following is not a polyatomic ion? A. NH4 B. OH C. NO2 D. NO3 E. None of the Above

A 140.5 g sample of niso4•xh2o was heated until no further mass decrease was noted. The remaining sample was assumed to be anhydrous niso4 with a mass of 77.5 g. First determine the moles of anhydrous niso4 and moles of h2o lost.

A rocket uses an engine that creates thrust through the combustion of a liquid fuel and an oxidizer. What kind of rocket is this?

When the drug heroin comes into contact with the Marquis reagent chemical what happens? a. It burns up b. It glows in the dark c. It turns purple d. It foams

Which of the following is NOT a decomposition reaction? a NH4NO2 (s) + N2 (g) + H2O (1) b H2O2 (aq) + H2O (l) + O2 (g) C KCl (s) → K (s) + Cl2 (g) d Al (s) + HCl (aq) + AICI: (aq) + H2 (g)

If we have 22 molecules of sodium sulfate in water, how many sodium ions will be observed in solution?

Sodiun atom, potassium atom, and cesium atoms have the same?

A molecule is what?

How many electrons in an atom could have these sets of quantum numbers n=7 l=3 ml=-1?

The reaction A+B-> C+D rate=k[A][B]^2 has an initial rate of 0.0810 M/s. What will the initial rate be if [A] is halved and [B] is tripled? What will the initial rate be if [A] is tripled and [B] is halved?