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Leya [2.2K]
3 years ago
5

What do isotopes of an element contain?

Chemistry
1 answer:
My name is Ann [436]3 years ago
5 0

Answer:

Explanation:

An isotope is a form of a chemical element whose atomic nucleus contains a specific number of neutron s, in addition to the number of proton s that uniquely defines the element. The nuclei of most atom s contain neutrons as well as protons

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Suppose you decide to define your own temperature scale using the freezing point (13 degrees C) and boiling point (360 degrees C
podryga [215]
M.P of  oleic acid = 13 deg C 
<span>B.Pof  oleic acid = 360 deg C </span>



<span>(360 - 13) / 100 = 3.47 </span>
<span>So 1 deg O = 3.47 deg C </span>

<span>The scale do not start at 0 deg C, it starts at 13 deg C. So to convert deg C to deg O,
 subtract 13 then divide by 3.47 </span>

<span>deg O = (deg C - 13) / 3.47 </span>

<span>convert  O to C multiply by 3.47 then add 13 </span>

<span>deg C = (deg O x 3.47) + 13 </span>


<span>convert 0 deg C to deg O </span>
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Which element shares the most characteristics with carbon (C)?
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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

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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.

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Is pepperoni pizza an element, compound,<br> heterogeneous mixture, or homogeneous mixture?
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Answer: Heterogeneous Mixture

Explanation:

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