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Boiling the leaf in water a second time helps to soften the leaf tissue further and remove chlorophyll, making it easier to observe the presence of starch. This process ensures that any starch present can be revealed by subsequent treatments, such as iodine staining, which will turn blue-black in the presence of starch. Additionally, it helps to eliminate any remaining pigments that could interfere with the experimental results.
What else can I help you with?
What tool would you use to measure the time it takes to bring water to boil?
A stopwatch or a timer would be suitable to measure the time it takes to bring water to a boil.
What is the time needed for water to boil and the effect of adding salt?
The time needed for water to boil depends on various factors such as the heat source and the amount of water. Generally, it takes around 5-10 minutes for water to boil. Adding salt to water increases its boiling point, meaning it takes longer for saltwater to reach boiling point compared to plain water. However, the difference in boiling time is minimal and may not be noticeable in everyday cooking.
At what time those fresh water boil?
The boiling point of water at 760 mm Hg is 100 oC.
How do you calculate the time taken by a kettle to boil?
The time taken for a kettle to boil will vary based on factors such as the power of the kettle, the amount of water being boiled, and the starting temperature of the water. To calculate the time, you can use the formula: time = (energy needed to heat water) / (power of the kettle). This formula takes into account the specific heat capacity of water and the efficiency of the kettle.
How much time does it take to boil saltwater or pure water?
That is entirely dependent on: 1. Your relation to sea level. 2. How much water you have. 3. How much salt is in the salt water. 4. What amount of heat you are using.
When you boil a kettle twice is the water hotter the second time?
No, the water will not be hotter the second time you boil a kettle. Once water reaches its boiling point at 100 degrees Celsius, it cannot get any hotter unless it is under pressure. Boiling water multiple times will not increase its temperature beyond 100 degrees Celsius.
Why does it take a less time to boil little ammounts of water?
It takes less time to boil little amounts of water because there is less water to boil. The more water in the pot, the longer it takes to heat up.
When you're making ramen noodle soup should you boil the water first and then add the noodles or boil the water and noodles at the same time?
you need to boil the water first then add the noodles
What tool would you use to measure the time it takes to bring water to boil?
A stopwatch or a timer would be suitable to measure the time it takes to bring water to a boil.
What is the effect of the time it takes to boil 16oz of drinking water by varying the temperature of the heat source?
If you increase the temperature of the heat source, you decrease the time it takes to boil the water.
What is the time needed for water to boil and the effect of adding salt?
The time needed for water to boil depends on various factors such as the heat source and the amount of water. Generally, it takes around 5-10 minutes for water to boil. Adding salt to water increases its boiling point, meaning it takes longer for saltwater to reach boiling point compared to plain water. However, the difference in boiling time is minimal and may not be noticeable in everyday cooking.
Does salt increase boiling time?
If your question means: If salt is added to water will it take longer to boil using the same conditions to boil fresh water? Adding salt elevates the boiling point of water so the mass of water has to be heated to a higher temperature to boil, therefore, boiling time is increased.
Does salt water boil faster than water with pepper?
No, salt water does not boil faster than water with pepper. Adding salt or pepper to water may change its boiling point slightly, but the difference is not significant enough to affect the time it takes to boil.
Why putting less water in kettle will help use less energy?
because it takes less time for the water to boil. I f you put more water in the kettle it will take a longer time for it to boil which takes in more energy
How do you make and boil perogies without them breaking when you boil them?
Keep the water at a low, gentle boil (medium-high heat) and only cook the perogi until they float to the surface of the water. At time, the perogi are cooked and need to be promptly removed from the water.
Can you boil water in a slow cooker?
No, slow cookers are not designed to boil water as they operate at lower temperatures for slow cooking food over a longer period of time.
Does food colouring affect the time it takes for water to boil?
Food colouring does not affect how long it takes for water to boil. Both clear water and water with food colouring boil at the same speed with no real obvious differences in time.
