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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

Which substance has the highest ignition temperature?

Tungsten has the highest ignition temperature of any metal, at around 6,192°F (3,422°C).

What is the the freezing point for liquids?

32 degrees Fahrenheit or 0 degrees Celsius.

What is the equation for changing Celsius to kelvin?

To convert Celsius to Kelvin, you add 273.15 to the Celsius temperature. The equation is: Kelvin = Celsius + 273.15.

What is the theory of kelvin's double bridge experiment?

Theory: -

Kelvin's bridge is a modification of whetstone's bridge and always used in

measurement of low resistance. It uses two sets of ratio arms and the four terminal

resistances for the low resistance consider the ckt. As shown in fig. The first set of ratio P

and Q. The second set of ratio arms are p and q is used to connected to galvanometer to a

pt d at an Approx. potential between points m and n to eliminate the effects of connecting

lead of resistance r between the known std. resistance 's' and unknown resistance R

.The ratio P/Q is made equal to p/q. under balanced condition there is no current flowing

through galvanometer which means voltage drop between a and b, Eab equal to the

voltage drop between a and c, Eamd.

Now

Ead=P/P+Q ; Eab=I[R+S+[(p+q)r/p+q+r]] ------------(1)

Eamd= I[R+ p/p+q[ (p+q)r/p+q+r]] ---------------------(2)

For zero deflection->Eac=Ead

[ P/P+Q]I[R+S+{(p+q)r/p+q+r}]=I[R+pr/p+q+r] ----(3)

Now, if

P/Q=p/q

Then equation… (3) becomes

R=P/Q=S ------------------------------------------------------(4)

Equation (4) is the usual working equation. For the Kelvin's Double Bridge .It indicates

the resistance of connecting lead r. It has no effect on measurement provided that the two

sets of ratio arms have equal ratios. Equation (3) is useful however as it shows the error

that is introduced in case the ratios are not exactly equal. It indicates that it is desirable to

keep r as small as possible in order to minimize the error in case there is a diff. between

the ratio P/Q and p/q.

R=P/QS

How many celsius are 1 fereinheit?

Conversion formula: [°C] = ([°F] − 32) * 5 ⁄ 9 = ( 1 - 32 ) * 5 / 9 = -17.22 °C

What is 450 Fahrenheit converted to Celsius?

450 degrees Fahrenheit = 232.2 degrees Celsius.

What increase as the average energy of the motion of the particles of matter increase?

The temperature of the substance would increase as the average energy of particle motion increases. Additionally, the pressure exerted by the particles on the walls of the container would also increase.

What is deferant between pt100 and pt1000?

The Pt 1000 sensor is the "big brother" of the Pt 100 sensor. Its nominal resistance at 0°Cis 1000 Ω. Resistance values of the whole series are higher by a factor of 10. The sensor

is used in the same way as the Pt 100 sensor. Its dimensions are slightly larger (4 x 5

uninsulated). Thermostats and sensors for Pt 1000 on request.

How does temperature effect the weight of gasoline?

It doesn't

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Well, to a minor extent, it does. Warm liquids weigh less than the same volume of a cold liquid. So a gallon of ice cold gasoline would weigh slightly more than a gallon of hot gasoline. Like most things, liquids expand and contract with temperature.

Use the Gibbs free energy equation shown below to determine the temperature range for which the decomposition of KCIO4 is spontaneous?

To determine the temperature range at which the decomposition of KClO4 is spontaneous, you would need the values for the standard Gibbs free energy change (ΔG°) and the equilibrium constant (K). By using the equation ΔG = -RTlnK and taking into account that ΔG = 0 for a reaction at equilibrium, you can rearrange to solve for the temperature range where decomposition is spontaneous.

If kelvin absolute zero is -273 what substance is that cold?

"Absolute zero" (Zero Kelvin) is a theoretical temperature, at which all atomic motion stops. This temperature can't be reached in practice, but we can get very close. Laboratories on Earth have reached temperatures of less than a microKelvin (millionth of Kelvin, or millionth of a degree from absolute zero). In outer space, it usually doesn't get much colder than about 3 Kelvin, because of a background radiation equivalent to that temperature.

How does molecule size affect boiling point?

With a bigger size there are stronger London forces. London forces are also known as Dispersion forces and van der Waal forces. These forces become stronger as the size of the molecule increases.

Butane, C4H10, is a gas with a relative size of 58 and a boiling point of ~ -1 ºC. Octane, C8H18, is a liquid with a relative size of 114 and a boiling point of 125 ºC. The two molecules differ in size only but as octane is bigger it has a higher boiling point due to the dispersion forces.

If a student has a beaker containing 55 grams of water at 100 degrees Celsius how much heat is needed to convert the water to steam?

The formula for any heat transfer is: q=mcT, where q=amount of heat, m=mass of the object, c=specific heat capacity of the object, and T=the change in temperature.

What the problem doesn't have is the starting temperature, so I'll assume a room temperature of 25C. Water boils at 100C, so the change in temp is 75C (100C-25C). Fortunately, 55mL of water has a mass of 55g, and the specific heat capacity of water is 1 calorie per gram per degree celsius (1 cal/g-C).

Plug in our numbers: q=(55g)(1 cal/g-C)(75C) = 4125 cal, or 4.1x103cal to observe significant numbers.

If you need the answer in another measure of energy, such as joules, the conversion is 4.184J=1 cal. And our answer would be (4.1x103cal)(4.184J/cal) = 1.7x104J.

An amphoteric species is one that reacts as what at 25 degrees C?

An amphoteric species is one that can act as both an acid and a base, meaning it can donate and accept protons in a chemical reaction at 25 degrees Celsius. Examples include water and amino acids.

Which one is greater 0 degrees Fahrenheit or 10 degrees celsius?

The temperature 10 degrees Celsius is much warmer than 0 degrees Fahrenheit.

Normally higher numeric values are found on the Fahrenheit scale, with its smaller "degrees". However, the value 0°F is 32 Fahrenheit degrees below the freezing point of water, and is equal to -17.8 °C. The value 10 °C is above the freezing point of water (0°C) and is equal to 50 °F .

What is the average temperature in Fahrenheit for Mercury?

The average temperature on Mercury can vary significantly, ranging from about -290°F on its dark side to over 800°F on its sunlit side. However, the overall average temperature on Mercury is approximately 332°F.

Where did Andres Celsius invent Celsius?

Andres Celsius developed a similar temperature scale that was the reverse of modern scale. The Celsius scale was named after the Swedish astronomer Anders Celsius(1701-1744). Swedish biologist, Linnaeus developed our modern Celsius scale and named it after Anders Celsius.

What word describes the Phenomenon when resistance of electricity stops at cold temperatures?

Superconductivity is the phenomenon where electrical resistance drops to zero at low temperatures. At these temperatures, certain materials can conduct electricity without any losses due to resistance.

Does the type of cup affect water's temperature?

Yes, the type of cup can affect the water's temperature. For example, a metal cup may conduct heat better than a paper cup, causing the water to cool down faster. Furthermore, an insulated cup may help maintain the water's temperature for a longer period of time.

How hot is 5 Celsius?

5 Celsius is relatively cool, equivalent to 41 degrees Fahrenheit. It is considered sweater weather and generally not hot.

What is 93 F equal to in C?

93 degrees Fahrenheit = 33.89 degrees Celsius

  • [°C] = ([°F] − 32) × 5⁄9

What happens to water if you compress it more and more and more?

As water is compressed, its density increases, making it harder to compress further. However, if you manage to compress water to extremely high pressures, it could turn into ice. This is known as "ice VII", a high-pressure phase of ice that forms under extreme conditions.

When temperature are near absolute zero what process causes atoms to begin to clump?

Near absolute zero, atoms begin to clump together due to a phenomenon known as Bose-Einstein condensation, which is a state of matter where a large number of particles occupy the same quantum state. This clumping occurs because atoms lose their individual identities and behave as a single entity at such low temperatures.