3 of 20 recommended pressure being in the range of 25 to 45 lb/in.2. Suppose a t

Question

3 of 20 recommended pressure being in the range of 25 to 45 lb/in.2. Suppose a tire has a pressure of 43.0 lb/in. Convert 43.0 lb/in.2 to its equivalent in atmospheres. Express the pressure numerically in atmospheres. View Available Hint(s) 43.0 lb/in.22.93 atm Previous Answers Correct Part C High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000 Pa) to about 60,000 kPa (60,000,000 Pa). It is often convenient to know the pressure in torr. If an HPLC procedure is running at a pressure of 2.21x108 Pa, what is its running pressure in torr? Express the pressure numerically in torr. View Available Hints) torr 2.21x108 Pa- Submit Next > Provide Feedback

Explanation / Answer

Ans :

1 lb/in2 = 0.068046 atm

so 43.0 lb/in2 = 43.0 x 0.068046 atm

= 2.93 atm

Part C :

1 Pa = 0.0075 torr

So 2.21 x 108 Pa = 2.21 x 108 x 0.0075 torr

= 1.7 x 106 torr

Part A : d) The number of He atoms is two times smaller than the number of O2 molecules since each particle (an atom or a molecule) will exert the same average pressure against the container's wall.

The partial pressure of the gas is directly proportional to the mole fraction of particles existing in the mixture. Since the partial pressure is half which means even the number of particles are half than the oxygen molecules.

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