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d1i1m1o1n [39]
3 years ago
15

In the wintertime, you decide to buy a helium balloon at Dollar Tree. It is fully

Chemistry
2 answers:
irga5000 [103]3 years ago
7 0

Answer:

When the temperature decreases the pressure decreases with it, causing it to crumple or deflate.

Explanation:

Gemiola [76]3 years ago
5 0

Answer:

The reason that the balloon shrinks is because when the temperature drops, helium becomes more dense then it already is. So what happens is that its molecules lose energy, slows down and moves closer together to conserve heat and this decreases the volume inside the balloon because the helium molecules are moving closer together, rather than outward toward the shell of the balloon which cause the balloon to swell then shrink. The gas law that causes this to happen is the Charles law.

Explanation:

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In general anesthetic works on brain, and produce unconsciousness and insensitivity to feel pain or anything. Generally it lowers the sensitivity of the organs.  Diethyl ether is the first ether that is used as anesthetics.


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What quantity of heat is required to raise the temperature of 460g of aluminum from 15C to 85C?
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Answer:

Q = 28.9 kJ

Explanation:

Given that,

Mass of Aluminium, m = 460 g

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Final temperature, T_f=85^{\circ}

We know that the specific heat of Aluminium is 0.9 J/g°C. The heat required to raise the temperature is given by :

Q=mc\Delta T\\\\Q=mc(T_f-T_i)\\\\Q=460\ g\times 0.9\ J/g^{\circ} C\times (85-15)^{\circ} C\\\\Q=28980\ J\\\\\text{or}\\\\Q=28.9\ kJ

So, 28.9 kJ of heat is required to raise the temperature.

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