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When evaporating dish is held over the flame ( air holes are closed )?
I assume the air holes are on a bunsen burner? In which case, when the air hole is closed the flame glows yellow, is less hot, and is more like the flame on a wax candle. When the air hole is opened, air is drawn in and the flame burns blue and produces a fiercer heat.
Example of exothermic?
When concrete cures it warms up. Those hand warmers that heat up when they are opened up are exothermic. Desiccants when exposed to a lot off water.
What is difference between open reflux and closed reflux chemical oxygen demand measurement?
The closed reflux method is more efficient in the oxidation of volatile organic compounds than is the opened reflux method. The reason for this is that the oxidant is in contact with these compounds for a longer time. Besides, the closed method is cheaper as only 2 mL of sample is required, since 5 mL is the total volume of the mixture. This means that the amounts of reagents and sample are reduced by a factor of over 20 compared to the opened reflux method. In addition, this fact makes the method less contaminating and allows for the simultaneous digestion of a great number of samples
Which is an example of effusion?
An example of effusion is the process by which a gas escapes through a tiny hole in a container into a vacuum, as seen in the flow of gas molecules from a pressurized canister when the nozzle is opened.
What is the name of the gas that is released from a can of soda when it is opened?
Carbon dioxide gas is released from a can of soda when it is opened.
Is a rabbit an example of a closed system or opened system?
open
What can be opened but not closed?
is the styllable hi opened or closed
What is the opposite of closing?
The opposite of the adjective closed is open. The opposite of the verb closed is opened.
Should fireplace doors be opened or closed during burning?
In general, open. Doors may be closed when fire has burned down. Even tempered glass may shatter during very hot burns.
Was ray Charles coffin opened or closed?
closed
What is the opposite of opened?
closed
Early pregnancy is the cervix opened or closed?
Closed. S
Is a snow leopards circulatory system opened or closed?
closed
What can be opened but can't be closed?
an egg
What is a curcuit opened and closed with?
a switch
What can be opened and never closed?
egg
When a baby parrot is born its eyes are opened or closed?
they should be closed
