What are compounds that react with acids and bases to make certain colors?

Why do some salts dissolve spontaneously even though the process is endothermic overall?

Which law states that the pressure and absolute temperature of a fixed quantity of gas are directly proportional under constant volume conditions?

Draw a phylogenetic tree based on characters 1-5 in the table below

Let us assume that fe (oh) 2 (s) is completely insoluble, which signifies that the precipitation reaction with naoh (aq) (presented in the transition) would go to completion. fe2 + (aq) + 2naoh (aq) → fe (oh) 2 (s) + 2na + (aq) if you had a 0.

How many milliliters of solution of 2.15 M K2SO4 must be used to make 63 mL of a solution that has a concentration of 0.188 M K2SO4?

The organisms living together in a community are interdependent upon one another. Look at the food web below. In which of the following ways is a puffin dependent upon salmon? A. Puffins have a commensalistic relationship with salmon. B.

2) Which of the following is a true statement? A: All the atoms of an element must be identical. B: Compounds may be separated by physical means. C: Mixtures may not be separated. D: Homogeneous is one type of compound.

How to tell the difference between ionic and covalent bonding?

The combustion of propane may be described by the chemical equation C3H8 (g) + 5O2 (g) ⟶3CO2 (g) + 4H2O (g) C3H8 (g) + 5O2 (g) ⟶3CO2 (g) + 4H2O (g) How many grams of O2 (g) O2 (g) are needed to completely burn 83.3 g C3H8 (g) ?

Was the relationship among temperature, heat, and thermal energy?