Deci-

The multiplying affixes di-, tri-, tetra-, penta-, hexa-, hepta-, octa-, nona-, deca-, undeca-, and so on are used to indicate a set of identical unsubstituted radicals or parent compounds. The forms bis-, tris-, tetrakis-, pentakis-, and so on are used to indicate a set of identical radicals or parent compounds each substituted in the same way. The affixes hi-, ter-, quater-, quinque-, sexi-, septi-, octi-, novi-, deci-, and so on are used to indicate the number of identical rings joined together by a single or double bond. 

Q2 hecto b Although hecto, deka, deci, and centi... 

Fractional deci (d) cent (c) milli (m) micro ( 4) nano (n) pico (P) femto (f) atto (atto)... 

Spare rotors are frequently part of a new compressor contract. A deci sion must be made regarding the testing of the spare rotor. The recommended practice is to mechanically run spare rotors, using the same procedures used for the main. As a matter of logistics, the compressor is usually shipped with the last run rotor. If a performance test has been specified, it can be run before the rotors are changed and both rotors performance tested. This would not be economical, however. 

The dislillale ia collected in a oOO c.c. Krkniueyar flask having a mark upon it 1c indicate the level of 2o0 c.c. Phenolpbthalein solution and a an tEcicnt excess of deci-normal sodium hydroxide solution ar,r lulded to the distillate and tho excess of alkali determined by lack-titralina. 

Glyceryl acetate, which is an artificial ester commonly used in the adulteration of bergamot oil, is detected fairly easily on account of its high solubility in dilute alcohol. The test is carried out as follows Ten c.c. of bergamot oil and 20 c.c. of 5 per cent, alcohol are well shaken in separating funnel, and after the solutions have separated and become clear the watery solution is run off and filtered. Ten c.c. of the filtrate are exactly neutralised with deci-normal alkali, and then 5 c.c. of seminormal alkali run in, and the whole saponified under a reflux condenser for one hour. In the case of pure bergamot oil 0 1 or at most 0 2 c.c. of semi-normal alkali will have been used up by the saponification, whilst each 1 per cent, of glyceryl triacetate present in the oil will be represented by practically 0 5 c.c. of semi-normal alkali. 

Ester found in 5 less the amount of ester equivalent to the volume of deci-normal sodium hydroxide used up in the blank experiment. 

Prefix deci- centi- milli- micro- nano- pico- fcmto- atto- zepto-... 

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