A chemical change occurs when

a. dissolved minerals solidify to form a crystal.

b. ethanol is purified through distillation.

c. salt deposits form from evaporated seawater.

d. a leaf changes color in the fall.

Hg2I2 (s) ⇄ Hg2 2 + (aq) + 2 I - (aq) Ksp = [Hg2 2+][I-]^2 A saturated solution of Hg2I2 is at equilibrium at 25°C as represented by the equation above. If [I-] = 4.

Is a chocolate chip ice cream a homogeneous or heterogeneous mixtures?

The density of a sample of gas is 1.0 g/L. What is the density in units of mg/mL

Is forms from coal, oil, and gas burning physical or chemical weathering

What is the ph of a 0.35 m solution of anilinium nitrate (c6h5nh3no3) ? kb for aniline is 4.2 * 10-10. your answer must be within ± 0.4%?

What allows electrons to flow between electrodes in an electrochemical cell? a - conducting wire b - salt bridge c - electrolyte solutions d - battery

How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen? 1 mol of oxygen has fewer molecules. 1 mol of oxygen has more molecules. Each sample has the same number of molecules.

What types of elements tend to combine to form molecular compounds?

Removing salt from water would decrease its what

How can a gardener remedy soil that is overly basic.