Which part of the eye controls whether or not the pupil dilates or constricts?

iris

cornea

retina

optic nerve

What do dust, smoke, salt, and chemicals have in common? A. They are gases in air. B. They make up water vapor in air. C. They are particles in air. D. They are found only in pure air.

What is the 4th element on the periodic table

What is a likely consequence of continued human population growth - Apex!

The actual yield of a certain reaction is 34.0 g, while the theoretical yield is 50.0 g. Calculate the percent yield.

Rutherford's experiment conflicted with Thomson's model because it showed that A. the atom contains positively and negatively charged particles. B. the atom is composed of mostly empty space. C. the atom is full of a positively charged substance. D.

What is the net electrical charge on a magnesium ion that is formed when a neutral atom loses two electrons?

Solid magnesium carbonate (mgco3) and solid sodium nitrate were mixed, placed in water, and stirred. what is observed? 1. mgco3 and nano3 will not dissolve. 2. mgco3 and nano3 will dissolve. 3. mgco3 will remain undissolved and nano3 will dissolve.

A method of lowering the concentration of HCl (aq) is to allow the solution to react with a small quantity of Mg. How many milligrams of Mg must be added to 219 mL of 1.032 M HCl to reduce the solution concentration to exactly 1.000 MHCl

An autoclave would often be used by which of the following scientists?"

When discussing acids and bases any substance that accepts a patron by definition is considered an