Answer:
Explanation:
It is easier if you convert the kelvin temperature into Celsius degrees:
- ºC = T - 273.15 = 150 - 273.15 = -123.15ºC
Now, you know that that is a very cold temperature. Thus, may be the oxygen is not gas any more but it changed to liquid . . . or solid?
You must search for the boiling point and melting (freezing) point of oxygen in tables or the internet. At standard pressure (about 1 atm) they are:
- Melting point: −218.79 °C,
- Boiling point: −182.962 °C
That means that:
- below -218.79ºC oxygen is solid (not our case).
- between -218.79ºC and -182.962ºC oxygen is liquid (not our case)
- over -182.962ºC oxygen is a gas. This is our case, because -123.15ºC is a higher temperature than -182.962ºC.
Hence, <em>the state of matter of oxygen at 150K</em>, and standard pressure, is gas.
Answer:
The ball will fly tangential to the original circle
Explanation:
The image here is missing, however we can still answer to the question.
In fact, the circular motion of the ball when it is tied to the rope is a combination of two separate effects:
1- The centripetal force, in the form of the tension in the rop, that pulls the ball at any time towards the centre of the circular path
2- The inertia of the ball, which tends to continue its motion in a straight direction, tangential to the circle and perpendicular to the direction of the centripetal force
When child let the string go, there is no more tension in the string acting on the ball, and therefore, there is no longer a centripetal force.
As a result, number 1) disappears, and therefore there is only the inertia of the ball that will determine its motion: and therefore, the ball will continue its motion straight in a direction tangential to the original circle.
Answer:
The transfer of energy between the two substances stops when the two substances are at equilibrium. If the two substances were exchanging heat energy, then the transfer of energy stops when both are at the same temperatures and the net flow of heat energy between the two become zero.
Explanation:
A system is said to be in equilibrium when the forward forces are equal to the reverse forces and the equilibrium quotient is the same as the equilibrium constant. No further work is being done. Also, the entropy is at its highest and Gibbs free energy at its lowest.
Learn More:
For more on thermodynamic equilibrium check out;
brainly.com/question/11769517
brainly.com/question/6199269
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Answer:
The 3rd sentence is the wrong one:
'All carbohydrates have the general formula Cn(H2O)n'
Explanation:
This is wrong because it's a formula that holds true for simple sugars, but not for complex ones.
Take sucrose as an example, its formula is C12H22O11. Clearly it's C12(H2O)11.
This is so, because when a glycosidic bond is formed, it does so with the loss of a water molecule; hence the reaction is called condensation.
