A tank contains a gas mixture of 0.852 atm of He, 685 mmHg of O2, and 455 mmHg of N2. What is the pressure in mmHg of the gas mixture?

3. Calculate the mass of each of the following quantities: a. 2.41 x 1024 molecules of hydrogen, Hz:

Hydrophobic molecules (like oil) tend to self-associate in water rather than dissolve. What is the MAJOR energetic contribution to this property.

What is the name of the compound that has the formula N2O? a. nitrogen oxide b. dinitrogen oxide c. nitrogen dioxide d. dinitrogen monoxide

A chemist is about to perform a titration by adding a base to an acid. what is the most important reason for using a base instead of water to rinse out the burette?

Which statement best describes salts

Identify the characteristics of tornadoes and hurricanes

When magma intrudes parallel to another rock layer, the formation is called a (n) A. sill. B. dike. C. extrusion. D. unconformity.

What is the net amount of energy released when 1 mole of H2O is produced

Why is Sn (SO4) 2 named Tin (IV) Sulfate and not Tin (II) Sulfate?

An element x forms an iodide (xi3) and a chloride (xcl3). the iodide is quantitatively converted to the chloride when it is heated in a stream of chlorine: 2xi3+3cl2â2xcl3+3i2 if 0.5500 g of xi3 is treated, 0.2596 g of xcl3 is obtained.