A gas mixture containing oxygen, nitrogen, and neon exerts a total pressure of 1.20 atm. If helium added to the mixture increases the pressure to 1.50 atm, what is the partial pressure, in atm, of the helium?
O a. 1.30 atm
O b. 1.50 atm
Oc. 2.30 atm
0 d. 0.30 atm

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

What term describes technology that operates on an atomic level

Write a balanced equation showing the formation of copper (ii) nitrite from its elements