Which of the following is one way to prevent the corrosion of iron?

A. Paint exposed iron p21 with protective paint.

B. Protect the iron from polluted air.

C. Add carbon to the iron.

D. Let the iron develop a natural coat of carbonate.

Which of these equations correctly expresses the self-ionization of water? A) Upper H subscript 2 upper O superscript plus upper H subscript 3 upper O superscript plus double-headed arrow upper H subscript 2 upper O plus upper O upper H superscript

Which of the following is not typically used as a food preservative? A. calcium citrate B. sodium propionate C. vitamin E D. potassium sorbate

Describe endothermic vs. exothermic reactions in terms of product formation. (hint: what happens when products are formed?)

What parts of a wave are used to determine the wavelength of that wave

Germanium is a group 4A semiconductor. The addition of a dopant atom (group 3A element) that has fewer valence electrons than the host atom results in a p-type semiconductor.

What is the square root of 54554? What is the square root of 35654?

Halogens have ... Electron affinity

Observe: Change the Surface area from Minimum to Maximum. You can imagine that a solid reactant has been dissolved in a liquid. How does this change how many Reactant B molecules are exposed to Reactant A?

When placed in a 200-mL square box, a substance has a spherical shape and has a volume of 75 mL When placed in a 200-mL circular tube, the same amount of that same substance has a spherical shape and a 75-mL volume.

What is the example to the word camouflage