2. In the following reaction, identify the precipitate, write down the ionic,

net ionic reactions. Name the spectator ions

2KCl (aq) + Pb (NO3) 2 (aq) - 2KNO3 (aq) + PbCl2 (5)

How many joules are needed to warm 25.5 grams of water from 14ºC to 22.5ºC? A. - 8.4x103J B. 9.1 x 102J C. - 9.1x102J D. 8.4x103J

Free Energy Reaction Progression Which line indicates a higher reaction rate? A because it has a lower activation energy B because it has a lower activation energy. A because its Grxn is much lower B because its Gxrn is much lower.

If told to determine whether or an unknown substance is either salt or sugar what do you do to determine which it is explain?

Due in 30 minutes how is chemical activity used to separate copper from its ores

In every balanced chemical equation, each side of the equation has the same number of?

Iron has a density of 7.86 g/cm3. Calculate the volume (in dL) of a piece of iron having a mass of 4.77 kg.

Why is the data for water different from the elements, hydrogen and oxygen?

The sources of errors in the kinetic experiment are: a. Tools b. Personal c. Method d. All of the above

What must be true when work is done?

What valley could be younger