Which pair of dispersed phases and dispersing media can never form a colloid? Select one:
O a. solid and gas
O b. liquid and gas
O c. solid and solid
O d. liquid and liquid
O e. gas and gas

50 pts plz what is the physical state of matter of baking soda.

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.