Physics Van 3-site Navigational Menu

Physics Van Navigational Menu

Q & A: Cool Bunsen Burner Needle Valves

Learn more physics!

Most recent answer: 10/22/2007
Why does the needle valve in a bunsen burner remain cool? And also, what kind of energy is released by the reaction between the gas and the oxygen in the air when a bunsen burner is used?
cheater click wifes who cheat
the best android phone phone tracking apps
internet drug coupons site prescription coupon
married men cheat with men open wifes cheat
walgreens coupons deals free grocery coupons walgreens photo print coupons
finasteride cialis 80mg
ventolin 2mg deltasone 40mg
online discount pharmacy viagra coupons and discounts coupon for prescription
viagra coupons free read drug coupons
pfizer coupons for viagra prescription coupon viagra discounts coupons
cialis coupons from lilly prescription drug cards coupons for prescriptions
prescription drug coupons cialis coupons from lilly drug coupon
fusidinezuur kopen fusidic acid
niacine niacin v hrani
niacine niacin v hrani
flibanserin online click flibanserin buy
fluvoxamine (luvox) fluvoxamina bula
cefdinir red stool cefdinir nedir cefdinir nedir
voltaren retard voltaren forte voltaren spray
prescriptions coupons drug prescription card
how expensive is an abortion abortion clinic abortion clinics dallas tx

- Clarissa (age 14)
Anglec JHS, USA
The needle valve in a bunsen burner is not right near the flame. The flame burns where the gas and air (with oxygen in it) mix, in the hollow tube held above the needle valve. In addition, the needle valve is below the flame. The burning gases already are moving upwards through the tube because the gas comes out of a jet at the bottom pointing up into the tube. So all the hot gas comes out of the top of the tube, in a nice, controlled fashion and there is no "flickering" of the flame and little chance that there will be unburned gas at the end of the reaction.

There may be a little warming up of the needle valve in a bunsen burner when it operates because the flame emits visible and infrared light in all directions, some of which goes downwards towards the valve and gets absorbed. But air comes in from the sides to mix in with the gas (the Venturi effect, using Bernoulli's principle), and this flowing air helps to keep the bottom of the burner cool.

why people cheat marriage affairs how many people cheat
cheater what to do when husband cheats wifes who cheat
the best android phone link phone tracking apps
cvs discount card cvs coupon online prescription drugs discount cards
cvs discount card click prescription drugs discount cards
buy sildenafil 100mg viagra without a doctor prescription viagra 100 mg
coupons rx coupons
levaquin pill diprolene 0.05% furosemide pill
imitrex 50mg flagyl 200mg
viagra coupons from manufacturer open drug discount coupons
manufacturer coupons for prescription drugs viagra 2016 coupon coupon prescription
can i take minocycline with birth control read can i take minocycline with birth control
lisinopril and energy drinks lisinopril and energy drinks lisinopril and energy drinks
cialis price online cialis price history
cialis coupon lilly coupons for cialis printable transfer prescription coupon
cialis coupon lilly coupons for cialis printable transfer prescription coupon
coupons for prescriptions discount prescription coupons drug prescription card
claritinekombo read claritine za psa
naproxennatrium site naproxen migraine
naprosyn roche naprosyn wiki naprosyn nedir
fusidinezuur kopen go fusidic acid
proscar vs propecia for hair loss read proscar pris
fluvoxamine (luvox) open fluvoxamina bula
amlodipine 5 mg amlodipine kat amlodipine accord
renovacija stanovanja renovator renova g
nurofen cold and flu dosage nurofen plus dosage
allods online allo allo
motilium enceinte motilium notice motilium et grossesse
singulair 4 mg granulat singulair patient information

(published on 10/22/2007)

Follow-up on this answer.