What element has two electrons in the outer most shell

Diffusion is the movement of molecules from a. an area of low concentration to an area of high concentration. b. an area of high concentration to an area of low concentration. c. an area of equilibrium to an area of high concentration. d.

The density of water is determined by measuring the mass of a known volume of water. If you determined the density of a 25-mL sample of water, how many significant figures should you report if you used a s instruments?

What is the reaction quotient for the following reaction; A B + 2C? A. B. C. D.

What causes a reaction to be spontaneous? Provide an example in your explanation.

If you have 0.271 m3 of water at 25.0°C and add 0.107 m3 of water at 95.0°C, what is the final temperature of the mixture? Use 1000 kg/m3 as the density of water at any temperature.

How many total orbitals are within the 3s, 3p, and energy level?

When are tides highest? a. during the moon's first quarter phase b. when the sun, Earth, and the moon are nearly in a line c. during the moon's third quarter phase d. when the moon is at a right angle to the sun

How Fast Do Different Parts Of The EM Spectrum Travel In A Vacuum?

Why is haemoglobin a pure substance

The measurement of how fast an object moves over a certain amount of time. A:Velocity B:Speed C:Acceleration D:Displacement