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Temperature

This category is for questions about the various units and conversions of temperature, as well as the freezing point and boiling point of elements and compounds.

19,212 Questions

The condensing pressure is 260 psig and the condenser outlet temperature is 108 degree F for R22. how many degree is the liquid subcooling in this system?

Liquid subcooling is the difference between the condenser outlet temperature and the saturation temperature of the refrigerant. For R22 with a condenser outlet temperature of 108°F at 260 psig, the saturation temperature is approximately 94°F, resulting in a liquid subcooling of 14°F.

The evaporating pressure is 76 psig for r 22 and evaporator outlet temperature is 58 degree f. what is evaporator superheat for this system?

The evaporator superheat for this system would be 18°F. This is calculated by subtracting the evaporator outlet temperature of 58°F from the saturation temperature of the refrigerant at 76 psig, which is 76°F. The difference between the two temperatures gives the evaporator superheat.

Could you please explain on a particle basis how the addition of a solute affects the boiling point and the freezing point and the vapor pressure of the solvent?

A solute adds particles to a solution, such as:

NaCl-> Na+ + Cl- This puts 2 particles in the solution for every 1 formula unit of table salt. Any particle that gets added to a liquid interferes with the liquids ability to form crystals (ice), it interferes with the liquids ability to break surface tension ( boiling), and since less liquid molecules can escape there is less vapor pressure.

Addition of a solute means:

To freeze the solution you would have to slow the molecules down more than normal to encourage crystal growth, so the temp must be lowered.

To boil the solution you would have to speed the molecules up more than normal to encourage the molecules to leave the liquid, so the temp must be increased.

To increase the vapor pressure of the solvent has the same explanation as boiling.

What element melts at 120 degrees Celsius?

The element that melts at 120 degrees Celsius is mercury (Hg).

What happens to proteins dissolved in that water when you heat it to 100 degrees celsius?

When water is heated to 100 degrees Celsius, proteins may denature and unfold, disrupting their specific 3D structure. This can lead to loss of their biological function and possibly aggregation, causing the proteins to clump together. Additionally, some proteins may hydrolyze or break down into smaller peptides or amino acids due to the high temperature.

What are the four temperature scales?

4 basic ones

Celsius (C)

Fahrenheit (F)

Kelvin (K)

Rankine (R)

What is the boiling point in degree Celsius of water?

The boiling point of water at sea level is 100 degrees Celsius.

What is the boiling point of a celsius scale?

The boiling point of water is at 100 degrees Celsius

5 degree celsius to Fahrenheit?

5 degrees Celsius is equal to 41 degrees Fahrenheit using the formula: (°C x 9/5) + 32 = °F.

The scal that water freezes at 32 and boil at 212?

The temperature scale described is Fahrenheit. Water freezes at 32°F and boils at 212°F on the Fahrenheit scale.

212 degrees Fahrenheit is the same as centegrade?

212 degrees Fahrenheit is equal to 100 degrees Celsius. This is the boiling point of water at standard atmospheric pressure.

You need to heat a solid to a temperature of 250 and deg Celsius. What would be the most appropriate type of glassware to use?

A glass beaker or flask made of borosilicate glass would be appropriate as it is capable of withstanding high temperatures without cracking or shattering. Avoid regular soda-lime glassware as it may not be able to withstand the high temperature.

At 212 degrees Fahrenheit what does water do?

At one atmosphere pressure, pure water starts to boil at 212 F (100 C). It will then maintain that temperature until all the water has boiledaway.

What is 86 degrees Fahrenheit in Celsius degrees?

The conversion formula is

°Celsius = (°Fahrenheit - 32) X 5/9

Plugging in 86 for Fahrenheit in the formula, we get

°Celsius = (86 - 32) X 5/9

°Celsius = 54 X 5/9

°Celsius = 30

If water temp changes 15 degrees C how much heat was gained by the water?

To calculate the amount of heat gained by the water when the temperature changes by 15 degrees Celsius, you can use the formula: Q = mcΔT, where Q is the heat gained, m is the mass of water, c is the specific heat capacity of water (4.18 J/g°C), and ΔT is the temperature change (15°C).

How many degrees with 340 J raise the temperature of 6.8 of water?

To calculate the temperature change, divide the energy added by the specific heat capacity of water (4.18 J/g°C) and the mass of water.

Temperature change = Energy added / (specific heat capacity * mass)

Temperature change = 340 J / (4.18 J/g°C * 6.8 g) = 12.8°C (rounded to one decimal place).

Is 32 degrees Fahrenheit colder or hotter than 5 degrees Celsius?

32 degrees Fahrenheit is colder than 5 degrees Celsius. 32°F is equivalent to 0°C, so it is actually colder.

The refrigerant pressure inside an R-410A unit which is at room temperature (72 degrees F) and not operating is?

The refrigerant pressure inside an R-410A unit at room temperature (72 degrees F) and not operating will typically be around 118-120 psi for the low side and 405-435 psi for the high side. These values may vary slightly depending on factors like elevation and specific system conditions.

Which is 218.6 degrees Fahrenheit expressed in Celsius?

Start by taking the number in Fahrenheit and subtracting 32. Then divide the number by 9, and then multiply it by 5. This is how you convert Fahrenheit to Celsius or use the equation C = (F - 32) × 5/9
In this case, the answer is about 112.22 degrees Celsius.

What is zero Kelvin in Celsius and Fahrenheit?

Zero Kelvin is equivalent to -273.15 degrees Celsius and -459.67 degrees Fahrenheit.

What are Celsius and Fahrenheit?

Celsius and Fahrenheit are two common temperature scales used to measure temperature. In Celsius, water freezes at 0 degrees and boils at 100 degrees, while in Fahrenheit, water freezes at 32 degrees and boils at 212 degrees.

When kg of water at degrees is added to kg of water at degrees what is the final temperature?

To find the final temperature after mixing the two amounts of water, you can use the principle of conservation of energy. The specific heat capacity of water is 4.18 J/g°C. Calculate the total energy gained or lost by each portion of water and set them equal to each other to solve for the final temperature.