Where are most of the gas molecules in the atmosphere found?

An atom of tin has an atomic number of 50 and a mass number of 119 how many protons neutrons and electrons does this atom have

The graph of y = 3x2 + 12x + 11 is shown. Use the graph to solve the equation 3x2 + 12x + 11 = 2

Given a 800 mg sample of thorium-231 decomposes via beta emission with a half life of 25.5 hours, how long would it take, in days, for the sample to decay down to 25 mg? 231 0 231 th - > beta pa 90 - 1 91 800 mg / 25 mg

Would either gold or silver float in water? Why or why not?

Consider an ideal gas with a volume of V1. To what volume would you need to compress the gas to double its pressure? Express your answer in terms of V1.

Is it safe to take 450mg of Diphenhydramine Hydrochloride?

Which energy source produces carbon dioxide? a. plutonium b. uranium c. sunlight d. natural gas

Substance A and B are colorless, odorless liquids that are nonconductors and flammable. The density of substance A is 0.97 g/mL; the density of substance B is 0.89 g/mL. Are A and B the same substance? Explain your answer.

Describe what what food web is.

What are quarks and gluons made of?