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DedPeter [7]
3 years ago
5

Can someone plzzz help with numbers 14,15,#1 plzzz show work too cuz I don’t understand this plzzz help me

Chemistry
1 answer:
vovangra [49]3 years ago
4 0

Answer:

See Explanation below.

Explanation:

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Which term found in the electromagnetic spectrum is determined by its wavelength?
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Answer:  The answer is frequency.

Explanation:  If the wavelength is long, the frequency will be low.  If the wavelength is short, the frequency will be high.

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What type of compound can be<br> described by the following image?
uranmaximum [27]

Answer:

Covalent molecule

Explanation:

i just had got the answer right

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2 years ago
The vapor pressure of a substance describes how readily molecules at the surface of the substance enter the gaseous phase. At th
geniusboy [140]

Answer:

84.75°C is the boiling point of water at an elevation of 7000 meter.

Explanation:

Rate of change of pressure = 19.8 mmHg/1000 ft

1 foot = \frac{1}{3.28} meter

19.8 mmHg/1000 ft=\frac{19.8}{1000}\times 3.28 mmHg/m=0.065 mmHg

Pressure change for every 1 m = 0.065 mmHg × 1= 0.065 mmHg

Elevation      Pressure

     0 m       760 mmHg

1000 m       695 mmHg

2000 m       630 mmHg

Pressure drop at the elevation of 7000 m: 7000\times 0.065 mmHg=455 mmHg

Pressure at 7000 m = 760 mmHg - 455mmHg = 305 mmHg

The boiling point of water decreases 0.05°C for every 1 mmHg drop in atmospheric pressure.

At 7000 meter elevation the boiling of water will be :

0.05^oC\times 305=15.25^oC

Boiling point of water at 7000 meter elevation :

100.0^oC-15.25^oC =84.75^oC

84.75°C is the boiling point of water at an elevation of 7000 meter.

8 0
4 years ago
2.<br> Why does<br> a chemical equation<br> need to<br> be balanced?
arlik [135]

<em>Answer:</em>

<em>Chemical equations must be balanced to satisfy the law of conservation of matter, that states that matter cannot be produced or destroyed in a closed system. The law of conservation of mass governs the balancing of a chemical equation.</em>

Explanation:

7 0
3 years ago
How does particle motion effect pressure
Alex
The pressure is a result of the motion of particles
8 0
3 years ago
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