In the laboratory, you are remiminded not to refill a hot alcohol lamp. explain the reason for this precaution
81100
THATS FALSE, ONE SHOULD FILL IT WHEN ONLY HOT. DUH.
324896
Is that why people get drunk?\nI don't understand and point of it. \nI for one would be too afraid that I would end up in a strange place or hospital too drink at all
764126
Most things are designed to be fail safe.  By cutting off a supply of a reactant to an exothermic reaction, you will stop the reaction.  This is safer then having it get a lot of that reactant.
357248
So that they know for sure that the barbiturates, sodium pentothal and KCl were the cause of death. It is not good for record-keeping or prototcol to leave the cause of death open to other possibilities by chance.
985053
With a hot directed flame you can shape glass and make the lab equipment that you need. In a glass factory glass is made into all different shapes. Glass tht we know is really a liquid. You cansee this in an old window that has become rippled.
111084
Alcohol is flammable and pouring alcohol inside a hot alcohol lamp may char those beautiful eyebrows you had justdone offa you face like it never existed....
23029
You've read something completly wrong. Even if the mercury were liquid, which it isn't in this case, it would evaporate. The small amount in a lamp isn't enough to worry about and posses no health risks. Mercury is a strange metal in that it acts like liquid. That includes wanting to evaporate.\n\nNot getting cut on the glass is the real problem.
1137267
well they can't keep there fitness up-the body uses the same enzymes to break down and excrete alcohol as it does to break down lactic acid. when there is alcohol and lactic acid in the body the alcohol is the priority for the enzyme so the lactic acid will remain in the system not to mention it is a diaretic(increases fluid loss so rehydration will take longer affecting muscle recovery greatly). All that said if they only have a glass or two it shouldn't have enough of an effect to hinder their recover but it definitely doesn't help.
641975
I think it might take longer than over night to see a big difference in alcohol concentration but alcohol has a lower vapor pressure than water so it will vaporize faster.
725093
To prevent the prepared Grignard reagent from hydrolyzing before it has a chance to react.\n\nThe Grignard reagent is prepared with R-Br\n\nR-Br + Mg --> R-MgBr\n\nThis is then usually reacted with a Carbonyl compound (C=O) and then hydrolyzed to the alcohol.  If water is present then:\n\nR-MgBr + H2O  -->  R-H  +  Mg+2  + Br-1  +  (OH)-1\n\nThis can also be written as:\n\nR-MgBr  +  H2O  -->  R-H  +  Mg(OH)Br
714088
I too am in the hospital, and I agree with all of the above. These people often come into the hospital belligerent and difficult to manage. Other times they are to the point of unconsciousness in which case you can pass a tube to their stomach and pump it out.  Key here is hydration and observation, particularly for airway difficulties (if they are unconscious and unable to protect their airway due to lack of reflexes).  Sometimes they need intubation ( this is an endotrachial tube that is passed into their trachea to breath for the patient) and this is done for airway protection so that if they vomit their stomach contents, it won't go into their lungs....the endotracheal tube blocks this from happening.  Aspiration into the lungs is extremely serious because it damages lung tissue, and blocks the passage of oxygen from the lungs into the capillary circulation.\nAnother key factor is to get a blood alcohol level, blood glucose level, and check renal (kidney) function and liver function.  Alcoholics often have permanent liver damage.
521723
to avoid the configeration damage
374011
It doesn't if the substance that is being tested is a liquid.  If the substance is a solid, then you need water to facilitate the interaction between the substance and the litmus.
844689
i cant create a diagram, but it is usually because one holds their urine too long. Meaning, never "hold it!"
158061
2 reasons really, courtesy for the next person, and if you let the alcohol level drop below the wick, the next burning will not be a burning of alcohol, but of the wick itself (and as it burns down into the alcohol burner, it can ignite the fumes, creating an explosion)\nI need to ask.. where are you that your lab is still using alchohol burners instead of bunsen burners?
139079
to avoid a disease or other medical condition.
808047
By touching the lamp you are changing the capacitance of the lamp and a circuit inside the lamp detects the change and turns on the light. \n\nIn order to offset sensitivity to temperature and other objects near the lamp it is designed to be triggered by a sudden change in capacitance - so when you slowly touch it, or tap it with an object with insufficient cpacitance then the circuit does not detect enough of a change to trigger.