What is formed when two or more atoms are held together by covalent bonds?

Gases tend to diffuse because

Is gasoline a solution

Is boiling water a physical change

Which mountain range formed as a result of plate motion around the Ring of Fire?

What is the mass in grams of 2.48/x10^25 molecules of AgNO3?

You are given a liquid. Briefly describe the steps you would take to show whether it is a pure substance or a homogeneous mixture.

What are the 4 variables that influence gas behavior

A 15.0 L tank of gas is contained at a high pressure of 8.20 x 10^4 torr. The tank is opened and the gas expands into an empty chamber with a volume of 6.00 x 10^4 L. Calculate the new pressure of the gas.

What amount of sucrose (C12H22O11) should be added to 5.83 mol water to lower the vapor pressure of water at 50 °C to 72.0 torr? The vapor pressure of pure water at 50 °C is 92.6 torr. 1

What element is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p65s2 4d10 5p4?