What controls the amount of light that enters the eye?

I need the answer to 452 of arogon

Which atom (Ba or I) would accept electrons from the other atom to satisfy the octet rule?

Jane observes that a shark detects its pray without actually touching it

How many moles of lead (II) hydroxide (solid) can be formed when 0.0225L of 0.135M Pb (NO3) 2 solution reacts with excess sodium hydroxide?

When equal moles of each reactant are used, which type of reaction will produce a slightly basic solution? strong acid - strong base strong acid - weak base weak acid - strong base None of these are correct.

Describe a way that people might be able to solve each envioronmental problem listed below. coal mining can harm habitats and cause pollution.

A sample of methane gas occupies 4.50 gallons at a temperature of 80.0 F. If the pressure is held constant, what will be the volume of the gas at 100. degrees C?

Jack wants to know if it takes longer for warm water to freeze into ice cubes than cold water, so he performed the following experiment. Jack placed 50 mL of water in the refrigerator and allowed it to cool to a temperature of 4°C.

How to calculate average concentration

Suppose that you measure a pen to be 10.5 cm long. Convert this to meters.