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3 years ago

14

What is significant about the temperature absolute zero?

1 answer:

Reptile [31]3 years ago

4 0

Explanation:

The absolute temperature is the lowest possible temperature in the universe. At this temperature, all atoms become motionless and cease to move.

The value of the absolute zero is pegged at -273.16°C.

It is the lowest limit of the coldness of a body.
Nothing can be colder than a body at absolute temperature.
Many researches are underway to take advantage of this temperature value for scientific purpose.
Thermodynamically, all process stops at this temperature.
When a body is brought close a body at absolute zero, it can suffer cryogenic burn due to heat transfer.

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A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each

svetlana [45]

Answer:

The distance the plane flies.

Explanation:

This is the dependent (outcome) variable because it is changing depending on the number of paper clips that are added to the plane.

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1 year ago

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A student pipets 10 ml of a 0.0693 m solution of kbr into a 500 ml volumetric flask and dilutes to the mark. what is the concent

Sonja [21]

The initial concentration of solution is 0.0693 M. The volume of solution taken is 10 mL and it is diluted to a final volume of 500 mL.

According to dilution law, the product of initial concentration and volume is equal to the product of final concentration and volume as follows:

$C_{1}V_{1}=C_{2}V_{2}$

Here, $C_{1}$ is initial concentration, $C_{2}$ is final concentration, $V_{1}$ is initial volume and $V_{2}$ is final volume.

Rearranging to calculate final concentration,

$C_{2}=\frac{C_{1}\times V_{1}}{V_{2}}$

Putting the values,

$C_{2}=\frac{0.0693 M\times 10 mL}{500 mL}=0.001386 M$

Therefore, concentration of the resulting solution is 0.001386 M.

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3 years ago

If the pressure of a gas is 100 kPa when the volume is measured to be 500 mL. What pressure would need to be exerted to have the

Korvikt [17]

Answer:

p2=125 kpa

Explanation:

Using Boyle's law

p1 x v1 = p2 x v2

p1=100kpa

v1=500ml

p2=?

v2=400ml

p2= (100x500)\400

p2=125 kpa

:)

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4 years ago

A property of matter that can best be observed when matter is involved in a chemical

QveST [7]

Answer:

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Explanation:

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3 years ago

Burning a piece of wood in fire can be best described as a

inna [77]

Answer:

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Explanation:

A chemical change is when something is turned into a new substances.

In this example the wood is being turned into ash.

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2 years ago