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Heating slowly will help with uniformity across the test specimine. The temperature should be uniform (about the same) throughout the entire product. If it is not, a reading could be false. If you're taking a measurement in one area, there may be a temp difference between the area you're testing and the area that you are observing...
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What is usage of water bath for Benedict test for glucose?
The water bath provides heat, which speeds up the reaction.
What type of heat transfer is needed to change water in to water vapor?
The water must be heated.
When a substance is heated it must gain electrons and energy?
Yes, it gains kinetic energy, for instance, when water is heated into water vapours the molecules of water vapour move faster than the molecules of water. This is because the water vapour has more kinetic energy than water.
How do birds eliminate waste?
All waste from the toilets are stored in tanks that must be emptied on the ground. The waste water from the sinks, however are dumped in flight. The water is expelled from heated tubes that protrude out from the belly of the plane. The tubes are heated to prevent the water from freezing as it is being dumped.
In a beaker sugar is dissolved in water and then the water is heated and evaporates The sugar is recovered and heat is again applied Vapor is released and the material in the beaker changes from?
In a beaker, sugar is dissolved in water, and then the water is heated and evaporates. The sugar is recovered, and heat is again applied. Vapor is released, and the material in the beaker changes from white to black. What must you know to determine if a chemical change occurred? CO2 (carbon dioxide) CuO (oxidized copper) H2O (distilled water) H2O2 (hydrogen peroxide) NaCl (sodium chloride)
Why water bath must be used while heating ethanol and acetone?
A water bath must be used while heating ethanol and acetone because the temperatures at which they can be heated might break the container they are heated in. Some metals are also heated this way.
What is usage of water bath for Benedict test for glucose?
The water bath provides heat, which speeds up the reaction.
What type of heat transfer is needed to change water in to water vapor?
The water must be heated.
What are the precautions while heating alcohol?
1. Never heat alcohol directly on naked flame 2. you should take a beaker with boiled water in it and then place the alcohol with the test tube in it 3. you should wear goggles while heating alcohol. 4. never smell the alcohol directly after heating
Why must the lid be sealed when lavender flowers are heated in a container?
To stop water vapour escaping
When a substance is heated it must gain electrons and energy?
Yes, it gains kinetic energy, for instance, when water is heated into water vapours the molecules of water vapour move faster than the molecules of water. This is because the water vapour has more kinetic energy than water.
Why must epsom salts be heated to a constant weight?
To remove the water of hydration. the loss of weight will be the weight of water present in the original salts.
Does Water have to be heated in order to move from a gaseous to a liquid state.?
No; water (as gas) must be cooled to become a liquid - this change is called condensation..
What could cause the bath water to turn brown when coming out the faucet?
I think it has something to with your pipes not your water. Your pipes are must probably rusty and it is coming out in the water.
Do bath tub mats harbor germs?
Yes, you must clean bath tub mats as water trapped under can produce mold in less than 24 hours.
What are the rules for the Japanese bath houses for men?
One must first cleanse oneself with soap and water using the detachable shower heads located near the bath before entering the water. Once clean (including rinsing away all soap/shampoo), you may enter the bath. Typically, you should not let your hand towel touch the bath water. You may put it on your face, or thereabouts.
When using a water bath to determine the boiling point of a substance the substance's boiling point must be what?
Below 100 °C.
