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Why is salt added to pulses before cooking at their atmospheric pressure class 9THppt?
Wiki User
∙ 7y ago
The addition of salt to water raises its boiling point. As a reult the pulses are cooked at a higher temperature.
Wiki User
∙ 7y ago
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How does atmospheric pressure affect the boiling point of matter?
Atmospheric pressure exerts pressure on the molecules of the liquid, confining them. In order to boil, the electrons must be excited, but must become hotter to overcome the pressure of the atmosphere. Therefore, pressure makes a liquid boil at a higher temperature. With a solid, the molecules are already compact together and have to be melted before they can be boiled. This does not require excitation of electrons, but it does require movement of electrons. Once the solid is melted, pressure will make it harder for the electrons to become excited.
Nitrogen in the atmosphere must be fixed before it can be used by plants. Atmospheric nitrogen is fixed by?
bacteria and lighntning
Why water has a different boiling point at an elevation of 3000 meters than it does at sea level?
Water will boil at approx 100 degrees c at sea level. This is at a pressure of 1 bar.(14.7psi). As you get higher (say mount Everest) there is less pressure thus the boiling point will drop. If you own a car, you will probably know that the radiator in your car is pressurised. This is to enable the water that is used to cool down your car's engine to be able to absorb a lot more heat before it boils (something that shouldn't happen normally!). Due to the water not being allowed to boil, it will continually cool down the engine. Hope that helped!
Why the dry ice cannot be melting?
Dry ice can be melted into liquid form at pressure over 5.11 times atmospheric pressure. Reference the Phase Diagram of Carbon Dioxide at http://www.science.uwaterloo.ca/~cchieh/cact/c123/phasesdgm.html (If that page is no longer available, search for the keywords "phase diagram" & "carbon dioxide") In that diagram, X is the triple-point. This is the pressure (5.11 atm) and temperature (-56.4C) at which the solid, liquid and gaseous phases for CO2 co-exist. At below that pressure (as Y with 1 atm,) CO2 changes from solid to gas as temperature increases. At above that pressure (as Z with 73 atm,) solid CO2 melts into liquid before changing to gas as temperature increases.
How can you overcome the problem of decomposition of certain organic liquid during distillation process?
you can over come the problem of decomposition of certain organic liquid by rarefaction atmospheric pressure that the boiling point of liquid become less than of its previous that prevent decompose it before its boiling.
Why is salt added to cook pulses at atmospheric pressure?
why salt is added before cooking pulse at atmospheric pressure
Why do you get headaches before a storm?
PRESSURE (atmospheric) effects the sinus membraneSEE what a plumber has to know
Which atmospheric variable usually increases before precipitation occurs?
barometric
Why the boiling point of water is sometimes more than 100?
The boiling temperature of water is 100° C when the air pressure on the surface of the water is equal to standard sea-level atmospheric pressure. When the pressure is less, water boils at a lower temperature. (Cooking times for some recipes are longer in Denver, because at high altitude, the cooking liquid never gets to 100° C before it boils.) When the pressure is more, water boils at a higher temperature. (That's the reason behind the pressure cooker ... pressure inside the sealed vessel is higher, so the cooking liquid can be heated to more than 100° C without boiling, which decreases the cooking time.)
When the water?
When it is as cold as possible before freezing into ice, this will depend on the atmospheric pressure but generally between 0c and 4c
When the water is?
When it is as cold as possible before freezing into ice, this will depend on the atmospheric pressure but generally between 0c and 4c
How does atmospheric pressure affect the boiling point of matter?
Atmospheric pressure exerts pressure on the molecules of the liquid, confining them. In order to boil, the electrons must be excited, but must become hotter to overcome the pressure of the atmosphere. Therefore, pressure makes a liquid boil at a higher temperature. With a solid, the molecules are already compact together and have to be melted before they can be boiled. This does not require excitation of electrons, but it does require movement of electrons. Once the solid is melted, pressure will make it harder for the electrons to become excited.
What is the temperature of ice water before the ice is completely melted?
It depends slightly on the atmospheric pressure. At standard pressure the answer is 0 C or 32 F
What refrigerant has the lowest boiling temperatures at atmospheric pressure?
R-502 has thelowestboiling temperature atatmosphericpressure. It can be boiled as low as -50 deg F before the boiling pressure goes into a vacuum.
Why are atmospheric pressures considered the best indicator?
In weather: Before a storm comes to an area, say Kansas, the barometric pressure would drop, indicating an imminent storm
Why do you have to open a can of beans before cooking them?
Heating up the sealed can will create internal pressure. In uncontrolled conditions, that could be dangerous for anyone in the area.
What are the advantages of pressure cooking?
The advantage of pressure cooking is centered around water. Water can only be heated up to 212 F (or 100 C) as a liquid before it turns into a gas. This is true at sea level. But at a higher pressure, liquid water can get hotter, so it cooks the food faster. The opposite effect is the reason some recipes call for a longer cooking time at higher altitudes--the lower atmospheric pressure causes water to boil at a lower temperature, so the food cooks slower.
