3. Oxygen gas inside a 1.5 L gas tank has a pressure of 0.95 atm. Provided that the temperature
remains constant, how much pressure is ne
eded to reduce its volume by 72?​

1.9 atm

Explanation:

Using Boyle's law :

Pressure is inversely proportional to volume Given that temperature and mass remains constant.

Mathematically ;

P1V1 = P2V2

P1 = 0.95 ; V1 = 1.5L; P2 = ? ; V2 = 1.5 - (1/2*1.5) = 0.75 L

P1V1 = P2V2

0.95 * 1.5 = P2 * 0.75

1.425 = 0.75P2

P2 = 1.425 / 0.75

P2 = 1.9

P2 = 1.9 atm

fire

explanation:

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the miracle worker themeswilliam gibson

themes and meanings

(comprehensive guide to drama)

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there are two central themes in  the miracle worker: that the human spirit can triumph over even the most daunting of disabilities and that a dedicated teacher can transform the lives of those with whom he or she comes into contact. these inspirational themes have long been personified in the widely known true-life relationship between helen keller and annie sullivan, but  the miracle worker  also dramatizes collateral issues that extend beyond the particular case. underlying helen’s process of learning basic principles of what annie terms “obedience” (decorum, etiquette, and hygiene), there are more universal lessons of self-governance—the inculcation of self-restraint instead of willfulness, the development of self-discipline instead of self-indulgence. only when these lessons have been mastered can helen begin to acquire language—which, annie says, “is to the mind more than light is to the eye.”