Chemistry

Chemistry, 01.09.2019 03:30, raerea2005

What volume of air contains 10.0g of oxygen gas at 273 k and 1.00 atm?

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Biology, 21.06.2019 18:40, abbypark0804

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

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Chemistry, 07.08.2019 04:20, corlissquillen13

Asyringe of volume 20 ml has just been used and now lies empty on the doctor's desk. the pressure in the office is 100,000 pa. assume that the air is an ideal gas consisting of nitrogen n2 (80%) and oxygen o2 (20%) molecules. k=1.38×10-23 j/k and the molar mass of oxygen is 32 g/mol. the syringe must be heated to high temperatures to sterilize it. when the syringe is at its maximum temperature, the number of oxygen molecules is 6.5 x 1019 (but the pressure, volume, and percent oxygen remain the same), what is the rms speed of the oxygen molecules?

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Chemistry, 01.10.2019 20:20, 24chrim

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe eat day? air is 21% oxygen by volume.what volume of oxygen do you breathe each day?

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Chemistry, 23.11.2019 14:31, Gigglygoose3159

50 dm^3 of a mixture containing 60% co and 40% h2, by volume, ifs completely burnt in oxygen. assuming that all volumes are measured at the same temperature and pressure, a) what is the volume of the oxygen required, absb)what is the volume of co2 and steam, taken together, produced?

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