A solution is 0.0100M in both CrO42- and SO42-. Slowly, Pb(NO3)2 is added to this solution. What is the [CrO42-] that remains in solution when PbSO4 first begins to precipitate? Ksp of PbCrO4 = 2.8×10-13; Ksp of PbSO4 = 1.6×10-8.

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

When the mercury level in a barometer decreases that atmospheric pressure has