### colorless solid:

Zinc sulfate
* can also be mixed with lime or soda ash to form a longer lasting film on leaves.
* is chemical compounds
  - considered to be the most effective foot rot treatment
  - crystal
  - foliar-applied to assist in boll maturation and opening
  - sulfate
* is used as a disinfectant and as a white pigment in paints
  - in dyes and pigments
  - usually the best, safest compound for man and beast
* looks like and can be confused with Epsom salts.
* preferred source since it dissolves fairly easily and also supplies sulfur.
* readily available and economical source of zinc.
* synthetic form of the mineral zinc.
+ Zinc sulfate, Properties: Sulfur compounds :: Zinc compounds
  * Zinc sulfate is a colorless solid. It dissolves in water. It can react with bases to make zinc hydroxide.
+ Zinc, Uses, As zinc compounds: Chemical elements :: Transition metals
  * Zinc oxide can be used for sunscreen or paint pigment. Zinc oxide also is a semiconductor. Zinc chloride is used to preserve wood so it does not rot. Some fungicides have zinc in them. Zinc sulfate is used in dyes and pigments. Zinc sulfide is used in fluorescent bulbs to convert the ultraviolet light to visible light.

### colorless solution:

Arsenous acid
* colorless solution.
+ Arsenous acid, Properties: Acids :: Arsenic compounds
  * Arsenous acid is a colorless solution. It is a weak acid. It reacts with bases to make arsenite salts. It is highly toxic. It cannot be made in a crystalline form because it turns into arsenic trioxide and water again. It is similar to phosphorous acid, although it is not a strong reducing agent.

### colorless:

Healthy cell
* are colorless
  - rich in blood supply with radiant energy and fully functional
  - then permeable to water and nutrients necessary to maintain optimum health
* can ignore acyclovir, but infected cells activate acyclovir.
* divide in a controlled way, but abnormal cells keep on dividing and dividing.
* grow and divide in an orderly way.
* grow, divide, and replace themselves in a way that keeps the body in good repair
  - an orderly manner
* have 'self-antigens' on the surface of their membranes
  - the ability to break down and eliminate unwanted proteins
* make for healthy bodies.
* tear apart the transport molecule and the iron drifts safely off.
* turn brown and abnormal cells turn white or yellow.

### colorless:

Rubidium compound
* makes a red-violet color in a flame.
+ Rubidium, Properties, Chemical compounds: Alkali metals :: Chemical elements
  * Some rubidium compounds have a mixed oxidation state, though. Rubidium chloride is the most common rubidium compound. Rubidium hydroxide and rubidium carbonate are also used commonly. Rubidium compounds makes a red-violet color in a flame. Most rubidium compounds are colorless. Rubidium compounds are not as common as other alkali metal compounds, such as sodium compounds. Otherwise, they are similar.

### colorless, corrosive liquid:

Acrylic acid
* colorless, corrosive liquid.
* corrosive material that causes skin and eye burns on contact.
* has vapors that can irritate the lungs, nose and throat.
* is an essential building block material for products made by both companies
  - carboxylic acid
  - embryotoxic and teratogenic
* occurs as a corrosive, colorless liquid that is miscible with water.
* strong irritant to the skin, eyes, and mucous membranes in humans.

### combinatorial optimization problem:

Query optimization
* combinatorial optimization problem.
* is an important aspect of relational database design
  - integral part of relational database management systems
  - categorized into static and dynamic optimization

### combustible thermoplastic:

Polycarbonate plastic
* combustible thermoplastic.
* has the best impact resistance of all materials.