39. Also known as wetting agents, surface tension reducers that make chemical flow through smaller apertures. Name me.

23. _______________ is an example of a dialdehyde compound.

8. This physical property is the ratio of the mass of a substance to its volume:

18. Ether is a very flammable and can form some explosive mixtures with air. Its general formula is:

8. The general formula R-OH identifies as:

4. Formaldehyde in a dry powdered form is also known as:

6. What is the structural formula of formaldehyde?

16. ___________ are characterized by the presence of carbonyl group located on inside carbon chain (R-CO-R):

2. Quaternary ammonium compounds are used widely as:

Suppose one interior angle of a regular polygon measures 150°.  How many sides does the polygon have?