Which method of moving materials in and out of the cell requires energy.

active transport

passive transport

osmosis

diffusion

Describe the conditions that are necessary for snow to fall

Which element in the 18th column of the periodic table has the largest radius?

Calculate the volume occupied by 16g O2 at atp

Using proper units is important when recording data. In this lab, you determined three properties of the objects: mass, volume, and density. What are the units for each property? The units used for mass were. The units used for volume were.

A student dissolves 0.0688 mol of sodium hydroxide in water to make a 0.250 L solution. What is the molarity of the solution? a. 0.17 M b. 0.28 M c. 2.5 M

Is the animal farm poor true or false

Which list correctly shows carbohydrates in size from smallest to largest?

Metallic behavior is generally associated with elements with partially filled p orbitals. elements with unpaired electrons. elements with small atomic radii. elements with very negative electron affinities. elements with low ionization energies.

Does cos have a dipole moment? choose the answer that best explains the reason for your choice.

How do the fracture toughness values compare between ceramics, polymers and metals?