4. A sample of silicon contains

5.23 x 1011 atoms. Write this amount

as a whole number.

Which of the following is not a valid set of quantum numbers A. n = 2, l = 1, m = 0 B. n = 1, l = 0, m = 0 C. n = 3, l = 3, m = 3

Determine the concentration of h 3 o + to the correct number of significant figures in a solution with each ph.

Very important! True or false? Atoms with fewer than 4 outer electrons lend electrons?

How many eggs are present in one mole of eggs?

The empirical formula of a group of compounds is CHCl. Lindane, a powerful insecticide, is a member of this group. The molar mass of lindane is 290.8 g/mol. How many atoms of carbon does a molecule of lindane contain?

What is the effect on vapor pressure of a solution with particularly strong solute-solvent interactions? With particularly weak solute-solvent interactions?

What is the mass of 3.62X10^24 molecules of methanol

Which elements are correctly listed in order of increasing ionization energy? 1. o < f < ne 2. o < s < se 3. n < p < as 4. c < n < o 5. n < o < f?

Which of the following is not a drawback of using lithium batteries? A. Lithium's reactivity can cause explosions. B. Lithium batteries require the use of toxic materials. C. Lithium is more easily oxidized than any other metal. D.

Considering the concept of surface area affecting the rate of reaction, explain why grain storage silos sometimes explode spectacularly?