Chemistry Questions?

Question

A resting adult requires about 240 mL of pure oxygen/min and breathes about 12 times every minute. If inhaled air contains 20% oxygen by volume and exhaled air 16%, what is the volume of air per breath? Assume that the volume of inhaled air is equal to that of exhaled air)

Answer 1

the person gets about 4% of the oxygen inhaled therefore

4/100 of 240=9.6ml

if he breaths 12 times then he gets about=115.2ml of pure oxygen


keep questioning.bye

Answer 2

The oxygen used is 4% of the air inhaled (20% - 16%). So the volume of air required is 0.24L * 100/4 = 6L per minute. With 12 breaths per minute that equates to 500 mL per breath.

Answer 3

a million. From an factor view of a e book, you will see that there is two sides of the hide and pages. this means that the thickness would desire to be: Thickness = 200 * web site length + 2 * hide length = (200*0.10mm)+(2*0.020mm) = 20.04 mm = 2.004 cm 2. quantity = length * width * top = 10cmx2cmx2xm = 40 cm^3 A 2cmx2cmx2cm block is of quantity 8 cm^3. in case you're taking the full quantity of the steel block and divide it by way of the quantity of each and every guy or woman block, you will desire to locate how many blocks you desire: 40 cm^3/8cm^3 = 5 blocks Chemistry questions: - Evaporation is the actually approach of taking a substance and changing is from liquid section to gas section. Boiling is the factor the place the stress exerted by way of the liquid suits the encompassing stress, subsequently inflicting the substance to start evaporating. - the better stress you have, the tighter the air is packed, and the greater the capability of the molecules is contained and conserved. The capability of the molecules, at our point is indicative of heat. subsequently, the greater stress exists, the hotter the contained product turns into... which facilitates swifter and much less stressful cooking (considering which you could carry onto greater warmth for an prolonged quantity of time).

Answer 4

500ml