Topic profile page for Mm Hg.
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Topic "Mm hg" was discussed 455 times on 117 sites in last 3 months
Started 2 days, 8 hours ago (2009-01-05 15:42:00)
by HPV
Use the ideal gas law: PV = nRT P = pressure (in atm) V = volume of gas (in L) n = moles of gas R = universal gas constant = 0.0821 L atm / K mole T = temperature (Kelvin) P = 460 torr x (1 atm/760 torr) = 0.605 atm V = ? n = 28.0 g CO2 x (1 mole/44.0 g) = 0.636 moles T = 113 + 273 = 386 K V = nRT / P = (0.636)(0.0821)(386) / (0.605) = 33.3 L ...
Started 3 months ago (2008-10-07 10:13:00)
by Vincent B
The lid is tightly sealed on an empty 2.0 L soda bottle at 27.0ºC and 748 mm Hg. If the bottle is heated to 80.0ºC, what is the pressure inside the bottle?
Started 1 day, 1 hour ago (2009-01-06 22:07:00)
by hadouken
I need help! To prepare a sample of hydrogen gas, a student reacts zinc with hydrochloric acid. Zn (s) + 2 HCl (aq) --> H2 (g) + ZnCl2 (aq) The hydrogen is collected over water at 24 degrees C and the total pressure is 758 mm Hg (vapor pressure of water = 22.4 mm Hg). Calculate the partial pressure of hydrogen gas. How many grams of hydrogen are there in a 2.00 L sample of wet ...
Started 1 month, 2 weeks ago (2008-11-19 23:49:00)
by rongpa
High blood pressure has become a serious health risk - so serious that it's been dubbed "the silent killer." If your systolic blood pressure is at or above 140 millimeters of mercury (mm Hg), or your diastolic blood pressure is at or above 90 mm Hg, it's time to make some changes.
Started 6 hours ago (2009-01-07 17:43:00)
by HarryB
Quote: Originally Posted by Aiketgate 1 bar, 14.7psi, don't know the kg/cm2, sorry. Yes I do, now - 1.0197 kg/cm2 Also 750 mm of Hg, if that helps David So I guess changing to a standard cap when they arrive is not a bad idea then. It said domething like 7.5 Kpa if I recall right, it is now around -16C so...
Started 17 hours, 48 minutes ago (2009-01-07 05:55:00)
by Ali5tair
I have started taking it and stoped 3 times. Whenever I start taking it within 3 days I have say 10% more energy per day. Whenever I stop taking it days later I notice how flat I am again. Cheers Al Wikipedia sais this about CoQ10 . Coenzyme Q10 Coenzyme Q10 (also known as ubiquinone, ubidecarenone, coenzyme Q , and abbreviated at times to CoQ10 , CoQ, Q10, or ...
Started 1 day, 1 hour ago (2009-01-06 22:20:00)
by Somu
Partial pressure P = total pressure - vapor pressure of water = 758 - 22.4 = 735.6 mm Hg Volume V = 2.00 L Temperature T=24 + 273 = 297 K R = 62.364 L mmHg/K/mol Let number of moles = n PV = nRT n = PV/(RT) = 735.6 * 2.00/(62.364 * 297) = 0.08 Molecular weight of hydrogen = 2 g/mol Therefore mass of hydrogen = 0.08 * 2 = 0.16 g Ans: 0.16 g
Started 1 week, 1 day ago (2008-12-30 21:49:00)
by jun3machina
dont feel silly MM. everyone has different goals, and if it helps you then i say 'do it!' i'd like to lose 5-10 ilbs too, but being stuck sitting down at a drawing table all day, not getting any sleep and eating a frequent intervals for energy aint helping me. __________________ HG: * ...
