List a homogeneous material that is not a pure substance

A star is born whenever a nebula expands ... True Or False?

What is the change in enthalpy of the following reaction? 2NaBr (aq) + PbCl2 (aq) 2NaCl (aq) + PbBr2 (aq) Given: NaCl: ∆H = - 411 kJ NaBr: ∆H = - 360 kJ PbCl2: ∆H = - 359 kJ PbBr2: ∆H = - 277 kJ

Mercury has an atomic mass of 200.59 amu. calculate the mass of 3.0 x 10^10 atoms

A process at constant T and P can be described as spontaneous if ΔG 0. Over what range of temperatures is the following process spontaneous? Assume that gases are at a pressure of 1 atm.

A 0.0997 mol sample of O2 has a pressure of 0.692 atm and a temperature of 333k. What is it's volume

Are all individuals in a population of animals or a population of plants identical

What is the valency of rhodium

If you were given 10.0 mL of 2.0 M H3X, how many milliliters of 2.0 M NaOH would it take to completely neutralize the acid?

What are some solid mixtures in a classroom

What is the electron configuration of aluminum?