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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

75degrees C equals how many degrees F?

75 degrees Celsius = 167 degrees Fahrenheit

Formula: [°F] = [°C] × 1.8 + 32

What is greater - a 1 degree rise in the Celsius scale or a 1 degree rise in Fahrenheit scale?

A one degree rise on the Celsius scale is bigger.

A one degree rise on the Celsius scale is 1.8 rise on Fahrenheit scale.

What is -85 degrees Fahrenheit 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 -22.5 degrees Celsius.

18 degrees Fahrenheit is equal to how many degrees Celsius?

Start by taking the number in Celsius and multiply it by 9. Then divide that number by 5, and then add 32. This is how you convert Celsius to Fahrenheit or use the equation F = (9/5)C + 32
In this case, the answer is about 64.4 degrees Fahrenheit.

Why is boiling point of deuterium oxide different from water?

Standard water (hydrogen oxide) is H2O. We get deuterium oxide by changing the two hydrogen atoms to deuterium atoms. These are hydrogen atoms with an extra particle, a neutron. Since hydrogen comprises 1 proton, deuterium being 1 proton plus 1 neutron is roughly twice as heavy. This is significant on a chemical behavior scale. It is an exception to the rule that changes in nuclear weight do not affect chemistry.

What was the hottest temperature ever recorded in Las Vegas?

The average temperatures for Las Vegas are: January 45.5 F; July 91.1 F; annual average is 67.1 F. The average annual rainfall is about 4 inches.

What is water that reaches zero degrees Celsius become?

According to wikipedia, zero degrees celsius is the melting point of H2O, so anything below zero would be the solid form or ice and anything at or above zero would be liquid or water.

Why is the SI unit of temperature Kelvin but not Celsius?

Celsius and Fahrenheit are relative scales which are compared with freezing and boiling points of water. While kelvin is not relative and is an absolute scale. From graphical representation of Charles's when one extrapolate the graph straight, it will touch the zero volume at -273.16 Celsius or OK. This OK is the start or emergence of kelvin scale which is not related to anything, but absolute.

State the boiling point of cis-3-hexene and trans-3-hexene?

boiling point in cis-3-hexene is higher than in trans-3-hexene

Why?

1- in cis the compound is more polar ( dipole-dipole interaction)

2- and also it is effected by london forces

So, cis needs more energy to break up this compound , that's mean high boiling point is required here

let's see the Trans-3-hexene

1-there are slightly positive and negative charge in opposite direction so they cancel each other ( dipole-dipole interaction) is not effected here

2- there are just london forces so less energy is require means lower boiling point

:)

If 50 grams of a substance with a temp of 20 degree Celsius and specific heat of 2 is mixed with 200 grams of water with a temperature of 40 degree Celsius what will be the equilibrium temperature of?

Heat gained by one object has to equal the heat lost by the other object. The final temperature of the two objects will be the same.

Object 1:

mass1 = 50 g

initial T1 = 20 oC

Cg = 2 J/degree/gram

final T1 = Tf

Change in temperature = Tf - T1

Q = Cg x change in T x mass

= 2 x ( Tf - T1 ) x 50

Water:

Mass = 200 g

Cg = 4.18 J/ degree/ gram

Change in T = Tf - 40

Q = 4.18 x (Tf - 40) x 200

4.18 x (Tf - 40) x 200 = -(2 x ( Tf - 20 ) x 50)

Tf = 37.9 oC

Why alcohols boiling point is 100 degree celsius and water 1is lower 78 degree celsius?

Water boils at a higher temperature than alcohol(ethanol) as the inter-particular bonding is stronger. Water is held together by hydrogen bonding and although ethanol is also held together by hydrogen bonding, it is weaker due to the CH3CH2- group keeping the hydrogen bonds separated.

Water boils at ~100 oC whereas alcohol boils at ~78 oC.

How do you get the absolute zero temperature?

All energy must be removed from the atoms.

All atoms in the substance you want to reach absolute zero have to remain absolutely still, meaning that not even a single atom can move.

If you take a piece of paper, you may think that the atoms of the paper are not moving, but they are actually vibrating. Thus, for a solid object to reach absolute zero, all atoms must stop vibrating.

Sketch a phase diagram for water and label the melting point and boiling point at 101.3kPa?

At 101.3 kPa, the melting point of water is 0°C (273 K) and the boiling point is 100°C (373 K). The phase diagram would show a solid-liquid boundary at 0°C and a liquid-gas boundary at 100°C, with a triple point where all three phases coexist at 0.01°C and 611.657 Pa.

How hot is it in and under the sea?

Whether in a freshwater lake or river, or in saltwater, such as the ocean, temperatures vary just like they do in the air, but for different reasons. In the summer, the surface of the water can be heated quickly by the sun and the air, but the water will be cooler as you go deeper into the water. This can often be felt as a "thermocline" as major temperature differences can exist very close together. As you go deeper underwater, the temperatures will remain much more constant and unchanging as compared to the water near the surface.

Convert this temperature 50 degrees celsius to degrees Fahrenheit?

50 degrees Celsius converts to 122 degrees Fahrenheit.
A rough calculation... multiply the degrees Celsius by 2, then add 30 (giving the answer 130oF)

An accurate answer... multiply the degrees Celsius by 1.8, then add 32 (giving the answer 122oF)

What is the boiling point of 30w oil?

The boiling point of 30w oil can vary depending on the specific composition of the oil. Generally, the boiling point of motor oils, including 30w oil, can range between 400-600 degrees Fahrenheit.

Is 100 degrees Celsius a water's boiling point?

No. The freezing point is 0.00 degrees Celsius. The Celsius scale's 100 degrees equals the boiling point of water at sea level. The Celsius scale has been replaced by the centigrade scale, but it is still common to say Celsius.

How do you change 100 degrees F to C?

Zero in Kelvin is equal to 273 degrees C; 100 in Kelvin is equal to 173 degrees C.

Can you do the math?

Convert -25 celsius to the kelvin scale?

The answer is 248.15 K (approx.). The Kelvin scale starts at absolute zero and is used in scientific laboratories. Celsius is for general use and set 0 and 100 as melting and boiling point of water respectively. To convert from C to K, add 273.15 to C.