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​The cardboard box was sealed and the water was allowed to heat for 10 minutes. After 10 minutes, the student removed the four jars and immediately recorded the temperature of the water in each jar.

In the space below, make a prediction to answer these two scientific questions:

​​1. How will thermal energy be transferred between the instant hot pack and the water in each jar?

​2. How will the temperature of the water in each jar change during the 10 minutes the box is sealed?

​Write one or two sentences. It is not important for your prediction to be correct. You will explain whether or not your prediction is supported later.

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Antonio Box

Lvl 2
3y ago

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How many additional minutes after the desired chlorine residual is obtained in a 36 gallon Lyster bag is the water allowed to stand before use?

Typically, the water in a Lyster bag is allowed to stand for an additional 30 minutes after the desired chlorine residual is obtained before it is considered safe for consumption.


How is total residual oxidants related to total residual chlorine?

Total residual oxidants include all chlorine species present in water, which includes both free chlorine and combined chlorine. Total residual chlorine specifically refers to the amount of chlorine left in water after a certain contact time. In summary, total residual oxidants encompass total residual chlorine but also include other chlorine species.


How is the total residual chlorine affected to sea water?

The total residual chlorine in seawater can be affected by various factors such as sunlight exposure, temperature, pH levels, and the presence of organic matter. Sunlight can break down chlorine, leading to lower residual levels. Higher temperatures can also decrease residual chlorine, as can higher pH levels. Presence of organic matter can also consume chlorine, affecting the total residual levels in sea water.


What do you mean by residual chlorine?

Residual chlorine refers to the amount of chlorine that remains in water after it has been treated. It is important for maintaining water quality by ensuring that harmful pathogens are destroyed and that the water remains safe for consumption. Monitoring residual chlorine levels is a common practice in water treatment facilities to ensure that water is properly disinfected.


What does clorine residual mean?

Chlorine residual refers to the amount of chlorine remaining in water after the disinfection process. It is an important measure to ensure that water is safe for consumption by preventing the growth of harmful bacteria and pathogens. Chlorine residual levels are typically monitored to ensure they meet regulatory standards for water quality.

Related Questions

How many additional minutes after the desired chlorine residual is obtained in a 36 gallon Lyster bag is the water allowed to stand before use?

Typically, the water in a Lyster bag is allowed to stand for an additional 30 minutes after the desired chlorine residual is obtained before it is considered safe for consumption.


How is total residual oxidants related to total residual chlorine?

Total residual oxidants include all chlorine species present in water, which includes both free chlorine and combined chlorine. Total residual chlorine specifically refers to the amount of chlorine left in water after a certain contact time. In summary, total residual oxidants encompass total residual chlorine but also include other chlorine species.


What is total residual chlorine?

Total Residual Chlorine (TRC) is the total of free available residual chlorine and combined (bound) residual chlorine. The amount of measurable chlorine remaining after treating water with chlorine i.e. amount of chlorine left in water after the chlorine demand has been satisfied


How is the total residual chlorine affected to sea water?

The total residual chlorine in seawater can be affected by various factors such as sunlight exposure, temperature, pH levels, and the presence of organic matter. Sunlight can break down chlorine, leading to lower residual levels. Higher temperatures can also decrease residual chlorine, as can higher pH levels. Presence of organic matter can also consume chlorine, affecting the total residual levels in sea water.


What do you mean by residual chlorine?

Residual chlorine refers to the amount of chlorine that remains in water after it has been treated. It is important for maintaining water quality by ensuring that harmful pathogens are destroyed and that the water remains safe for consumption. Monitoring residual chlorine levels is a common practice in water treatment facilities to ensure that water is properly disinfected.


What does clorine residual mean?

Chlorine residual refers to the amount of chlorine remaining in water after the disinfection process. It is an important measure to ensure that water is safe for consumption by preventing the growth of harmful bacteria and pathogens. Chlorine residual levels are typically monitored to ensure they meet regulatory standards for water quality.


How do time and temperature affect stored potable water?

loses its chlorine residual


Chlorine is used to kill bacteria in the water at water treatment plants. This chlorine can be harmful to some ocean species. Based on this information what other step must be taken in the treatment o?

To mitigate the harmful effects of chlorine on ocean species, water treatment plants can implement additional steps such as dechlorination processes to remove residual chlorine before discharging treated water into the ocean. This can help protect marine life from the negative impacts of chlorine exposure.


Why do you add indicator in mid way of titration of residual chlorine?

Adding an indicator in the middle of a titration of residual chlorine helps to visually identify the endpoint of the reaction. The indicator changes color at the equivalence point, indicating that all the chlorine has reacted. This helps to determine the amount of titrant required, making the titration more accurate and precise.


What happens as aresult of the sun evaporating water from an ocean or lake?

Salts are obtained as a residual solid.


Can residual ozone in water be measured using chlorotex?

Chlorotex is a test designed for residual chlorine in water, not ozone. To measure residual ozone in water, specific analytical methods like ozone analyzers or oxidation-reduction potential (ORP) meters would be more appropriate. These methods are designed to specifically measure the presence of ozone in water.


Is shreded newspaper a result of a product with chemical properties?

Yes, shredded paper is obtained from residual papers.