An ML6 oxygen cylinder, when "charged" to normal pressures, holds 170 liters of oxygen. How long that will last depends on a number of factors.
If the flow is set to 2 liters per minute continuous then it will last less than 1 and 1/2 hours. If an oxygen conserving device is used (they give the gas in pluses when breaths are taken) it can last over 4 hours.
This will depend upon the gas flow rate. A size E oxygen cylinder in the UK contains 680 litres of compressed gas. At a flow of 10L/min for medical emergency use the cylinder will therefore last 68 mins. However if used at 6L/min it will last nearly 2 hours. In the US we use PSIG (gauge level). at full a tank is about 2200 PSI on any given tank size, and the E cylinder has a tank factor of 0.28. So you take take the PSI and multiple it by by the tank factor and divide that number by the flow rate. So at full, 2200 x 0.28 = 616 and dvided that by the flow rate. The final number is the total number of minutes at the given flow rate. So at 2 liters per minute (2 lpm) a completely full E cylinder will last 308 minutes or 5.13 hours (divide total minutes by 60 to get hours). 140 minutes at 4lpm, and so on. You deffinetly want to call your oxygen supplier well before the guage gets to the red. With most guages the very start of the red line (the end farthest from empty) is around 500 PSI. A good rule of thumb is to round down to the nearest whole hour when figuring duration. So when I've needed to I look at 5.16 hours and say 5 hours. If you do run out or are into the red already, call 911 (or your local emergency service), all ambulances carry oxygen and better to have them arrive and use their O2 than to call your oxygen service because ambulance should be able to get their faster. Remember, at the very beginning of red (500 PSIG) a E cylinder will only last 140 divided by flow rate...so 70 minutes at 2lpm, 35 minutes at 4lpm, etc. Dont risk it, when in red, call 911 first, then your oxygen supplies...that is as long as you dont have any other cylinders to use. common tank factors: H Cylinder factor is 3.14 D cylinder factor is 0.16 (typical portable oxygen size) * in the USA, all oxygen tanks, when completely full, are 2200 PSI, if you know the tank factor, you can easily compute the duration. Calculating liquid oxygen is a whole nother ball of wax....
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This question cannot be answer since d = m/Vthat is density is equal to mass divided by volume.In the original question we are only given one of the variables (mass) therefore it is impossible to solve for volume and it is therefore impossible to convert volume into teaspoons (1 teaspoon equals approximately 5 mL). It order for the question to be solvable either density or volume must be given as well.If what is being measured is water, the density of water is approximately 1 g/mL6 g x (1 mL/g) = 6 mL6 mL x (1 teaspoon/5 mL) = 1.2 teaspoons
The BHCG varies with the gestational age of the fetus. It can range from 0 to over 100,000. It begins at 0 and doubles about every 2 days until it peaks around 10 weeks gestation then begins to steadily decline and then levels off for the remainder of the pregnancy.
YES YOU CAN TAKE A PREGNANCY TEST TO LATE!!!!!!!!!! I AM 8 months pregnant and I tried to take one to put in my baby book because the other one got broke during cross country move... AND IT SAID NOT PREGNANT!!!! EVEN THOUGH I KNOW I AM 8 MONTHS!!!!!This is why it happens....(MLUs is Milliliters per unit)When you get pregnant, your body produces a hormone called HCG (I can not name nor pronaounce the long term lol) The longer you are pregnant the more hormone is in your body. So at 4 week- its 5MLUs to 426Mlus in your system. That is when normal pregnant women test.. now if you get the test that looks for the highest amount of HCG then you COULD test positive if you were just over the amount.. like at 426MLUs... As you grow in pregnancy your body changes your HCG hormone level and this is how it is...3 weeks LMP (7 DPO)0 - 50 mIU/ml4 weeks LMP (14DPO)5 - 426 mIU/ml5 weeks LMP18 - 7,340 mIU/ml6 weeks LMP1,080 - 56,500 mIU/ml7-8 weeks LMP7,650 - 229,000 mIU/ml9-12 weeks LMP25,700 - 288,000 mIU/ml13-16 weeks LMP13,300 - 254,000 mIU/ml17-24 weeks LMP40,060 - 165,400 mIU/ml25-40 weeks LMP3,640 - 117,000 mIU/mlYes you can take a test up to about 12-16 weeks but you might get a negative if your HCG is to high...OK The HPTS that you can buy in the store register as follows...20-50 MLUs50-100 MLUs100-250 MLUsWhat that means is.. say you have the ClearBlue test it can read between 50-100(that is the one I took) and you are 8 months which is 35 weeks that means my HCG is 3640-117000... There is no test other then a Doctor test that will say I am pregnant!! My sister is pregnant with my nephew and she took a test the same time I did and at 6 months (25ish weeks) got a positive. So In my calculations... DONT TAKE A TEST LATER THEN 6 MONTHS unless You know that you are and are goofing around because THEY ARE NOT AS RELIABLE AS THEY SEEM... GO TO A DR!!!! AND If you have any other questions you can call 18669426466 that is the pregnancy hot line and they can help with other questions... lol... GOOD LUCK AND CONGRATS... I talked to my dr about this and she said its true!!!!! You are very unlikely to get a pregnancy test that says yes after 7/8 months. I never knew that. THAT HELPS A LOT!!
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