According to the following electron structure, how many valence electrons does carbon have?

C = 1s2 2s2 2p2

A. 2

B. 4

C. 6

D. 8

For an atom to be electrically neutral the number

Which organism is most likely 10 centimeters in size?

What law did you use to solve this problem? Imagine that you fill a balloon at sea level (1.0 atm) with 18 L of air. You are taking the balloon to Denver, Colorado, for a birthday party.

What is the answer for 20+3*5?

How many moles of al2 (so4) 3 can form under these conditions?

Which types of orbitals are found in the principal energy level n = 4? A. S, d B. S, p, d, f C. S, p D. S, p, f E. S, d, f

Transport means to move something from one place to another. True False

What are two reasons that ocean water sinks in the Arctic Ocean? A. The surface water is warmer and less salty than normal. B. The surface water is warmer and more salty than normal. C. The surface water is colder and less salty than normal. D.

Which statement best describes the conductivity of weak electrolytes, such as weak acids and bases? A) Weak electrolytes do not dissolve in water and can not conduct electricity.

Two speakers are placed side by side and are described as having constructive interference. How do you know when constructive interference of sound waves has occurred?