What is the difference in energy between an electron in 1s and an electron in 4s.

He process by which plants and animals incorporate the NO3 - and ammonia formed through nitrogen fixationand nitrification

How to prepare 100 mL of lead nitrate Pb (NO3) 2?

Which of the following is considered an alternative energy resource? A. Coal B. Biomass C. Petroleum D. Natural Gas Once again, not smart enough to figure this out. (XD)

What are called protons? give examples?

How many grams of iron can be made from 16.5 grams of fe2o3

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?