Among the following groups of atoms, which have the same outer energy level configurations?

a. h, he

b. li, be, n, ne

c. mg, al, ca, ga

d. n, p, as, bi

Describe a way to separate iron filings from sand.

The reaction 2NO2 (g) + F2 (g) - - >2NO2F (g) has an overall second order rate law, rate=k[NO2][F2]. Suggest a mechanism consistent with this rate law, being sure to label steps as fast and slow. (Hint: It is easiest to assume the first step is slow.

When the concentration of solute in a solid solution exceeds its solubility limit, a new solid solution or phase forms that has a composition distinctly different than the original solid solution?

How are the shape of sand dunes determined? using one word

Explain how cells use digested food in your own words

Calculate the number of H atoms in 0.190 mole C 6 H 14 O .

What fuel is produced by the electrolysis of water? chlorine gas hydrogen gas natural gas oxygen gas

Model describe how you would show j. j. thomson's model of the atom using small beads and clay

Switching one substance for another is called ... ? a) displacement b) synthesis c) decomposition d) oxidation

C2h4 + O2 - CO2 + H2O If we start with 20 grams of CH4, how many moles of CO2 will form?