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What statements best describes how to safety smell a sample in a flask?
Wiki User
∙ 9y ago
You realize, of course, that the "following statements" are not listed. In geneal, place nose somewhat near flask. Do not inhale. Use hand in a wavelike motion to push air from flask towards the nose. Sniff. That's it!
Wiki User
∙ 9y ago
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What best describes how to safely smell a sample in a flask?
use your hand to wraft the fumes towars your nose
Why is it acceptable to add water to the titration flask?
Once you have measured out your sample and transferred it to your flask, the absolute amount (moles) of sample is fixed. Adding water to the flask will change the concentration in the flask, titrating also adds volume to the flask as well as reacting with the sample. However, the number of molecules of sample you put into the flask will not change by simply diluting it with water.
A sample of nitrogen gas is stored in a 500.0ml flask at 108kpa and 10.0c the gas is transferred to a 750.0ml flask at 21.0c what is the pressure of nitrogen in the second flask?
74.8 kPa.
What is the safety procedure of florence flask?
A Florence flask is a glass container used to hold liquid chemicals in the laboratory. For utmost safety, a person should always carry it with two hands when moving around the lab. Hold its long neck and place another hand at the base of the flask to keep it upright. It should always be rinsed after use.
A sample of HCl gas in placed in a 326-mL flask where it exerts a pressure of 67.5 mm Hg What is a pressure of this gas sample if it is transferred to a 135-mL flask at the same temperature?
Use Boyle's Law: p*V=constant at same temperatureSo let p2 be the wanted pressure in the 2nd flask (135 mL)then: p2 * 135 = 67.5 * 326 , so p2 = 67.5 * 326/135 = 163 mmHg
What best describes how to safely smell a sample in a flask?
use your hand to wraft the fumes towars your nose
Why is it acceptable to add water to the titration flask?
Once you have measured out your sample and transferred it to your flask, the absolute amount (moles) of sample is fixed. Adding water to the flask will change the concentration in the flask, titrating also adds volume to the flask as well as reacting with the sample. However, the number of molecules of sample you put into the flask will not change by simply diluting it with water.
What does the safety symbol of a flask mean?
glassware safety.
Why must the weighing scoop be washed when transferring the sample into the conical flask?
Your intention is to transfer only the true sample into the conical flask, not the dirt from the scoop.
A sample of nitrogen gas is stored in a 500.0ml flask at 108kpa and 10.0c the gas is transferred to a 750.0ml flask at 21.0c what is the pressure of nitrogen in the second flask?
74.8 kPa.
Flask A contains 2 liters of ch4 g and flask B contains 2 liters of o2 g each gas sample has the same?
number of molecules
How does a themos flask work?
Also known as a Buchner or vacuum flask, the flask uses vacuum to filter samples. A vacuum hose is attached to the hose barb and the funnel is placed on top. As the hose creates a vacuum, the sample is filtered through the funnel.
What is the safety procedure of florence flask?
A Florence flask is a glass container used to hold liquid chemicals in the laboratory. For utmost safety, a person should always carry it with two hands when moving around the lab. Hold its long neck and place another hand at the base of the flask to keep it upright. It should always be rinsed after use.
What are the common laboratory apparative?
Filter funnel,Brass tong,Safety goggles,Conical Flask,Bunsen Burner,Test tube,Safety gloves
A sample of HCl gas in placed in a 326-mL flask where it exerts a pressure of 67.5 mm Hg What is a pressure of this gas sample if it is transferred to a 135-mL flask at the same temperature?
Use Boyle's Law: p*V=constant at same temperatureSo let p2 be the wanted pressure in the 2nd flask (135 mL)then: p2 * 135 = 67.5 * 326 , so p2 = 67.5 * 326/135 = 163 mmHg
What is measuring flask?
measuring flask is a measuring flask
Why did Geisbert and Jahrling smell the flask?
Geisbert and Jahrling smelled the flask to check for any unusual or odorous smell that could indicate the presence or contamination of a dangerous pathogen. Smelling the flask is a part of their safety protocol to ensure that they are not exposed to any harmful substances.
