EXHALATION

In a basal metabolism measurements timed at 6.0 minute a patient exhaled 52.5 litre of air measured over water at 20^(@)C The vapour pressure of water at 20^(@)C is 17.5 torr The barometric pressure was 750 torr. The exhaled air analysed 16.75 volume per cent of oxygen both on a dry basis Neglecting any solubility f the gases in water and any difference in the total volume of inhaled and exhaled air, calculate rate of oxygen consumption by the patient in mL (STP) per minute

Which substance is used in self-contained breathing equipment because it absorbs exhaled CO_(2)" and "H_(2)O and releases O_(2) gas?

A self-contained breathing apparatus uses potassium superoxide, KO_(2) , to convert the carbon dioxide and water in exhaled air into oxygen, as shown by the equation: 4KO_(2)(s)+2H_(2)O(g)+4CO_(2)(g)to4HCO_(3)(g)+3O_(2)(g) How many molecules of oxygen gas will be produced from 0.0468 g of carbon dioxide that is exhaled in a typical breath?

A diver at a depth of 10 m exhales a bubble of air of volume 24.63 mL. The bubble catches an organism which survives on the exhaled air trapped in the bubble. Find out what will be the volume [x in mL] of the bubble when it reaches the surface after 10 min. The organism just inhales the air at the rate of 0.05 millimoles per minute and exhales nothing, Also find out the average rate [y in m mol/min] at which organism should inhale so that volume of bubble remains constant at the depth and the surface. Hence, find the value of (x)/(y) excluding decimal places [Given : P atm = 1 atm , d(H_(2)O)=g//cm^(3) , g = 1000 cm//s^(2) , T_(H_(2)O) = 200 K (throughtout)].

Chemical absorbes can be used to remove exhaled CO_(2) of space travellers in short spce flight. Li_(2)O is one of the most efficient in terms of absorbing capacity per unit weight. If the reaction is: Li_(2)O+CO_(2)rarrLi_(2)CO_(3) , What is the absorption efficiency of pure Li_(2)O in litre CO_(2)(STP) per kg ?

Following techinique is adopted to check suspected drunk drivers. Read the passage and answer the questions at the end of it. When suspected drunk drivers are tested with a Breathalyzer, the alcohol (ethanol) in the exhaled breath is oxidized to ethanoic acid with an acidic solution of potassium dichromate : 3CH_(3)underset("Ethanol")(CH_(2)OH)(aq)+2Cr_(2)O_(7)^(2-)+16H^(+)(aq)rarr underset("Ethanoic acid")(3CH_(3)COOH)(aq)+4Cr^(3+)(aq)+11H_(2)O(l) The Breathalyzer measures the colour change and produces a meter reading calibrated in terms of blood alcohol content. Colour of the testing solution changes from :