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Oxana [17]
4 years ago
5

How can you tell one elements from another?

Chemistry
2 answers:
stepladder [879]4 years ago
7 0
The protons in the atom determine what the atom is. It also determines the atomic number<span>. For example, hydrogen has one proton, so it the atomic number is one. Lithium has an atomic number of three because it has three protons.</span>
Nata [24]4 years ago
3 0
Should be the amount of protons 
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ki77a [65]

Answer: electron

Explanation:

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3 years ago
Which represents the self ionization of water at 25 degrees
gayaneshka [121]
This question comes with four answer choices:

<span>A. H2O + H2O ⇄ 2H2 + O2

B. H2O + H2O⇄  H2O2 + H2

C. H2O + H2O ⇄ 4H+ + 2O2-

D. H2O + H2O ⇄  H3O+ + OH-

Answer: option </span><span>D. H2O + H2O ⇄  H3O+ + OH-

(the +sign next to H3O is a superscript, as well as the - sing next to OH)

Explanation:

The self-ionization of water, or autodissociation, produces the two ions H3O(+) and OH(-). The presence of ions is what explain the electrical conductivity of pure water.

</span><span>In this, one molecule of H2O loses a proton (H+) (deprotonates) to become a hydroxide ion, OH−. Then, he <span>hydrogen ion, H+</span>, immediately protonates another water molecule to form hydronium, H3O+.
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3 years ago
Plz help me ASAP I’ll give brainliest.
Zinaida [17]

Answer:

Ways the Sun's thermal energy can be transferred.

Explanation:

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6 0
3 years ago
The coldest temperature ever recorded on Earth was -128.6°F (recorded at Vostok Station, Antarctica, on July 21, 1983). Express
Sever21 [200]

Answer : The correct option is, -89.2^oF\text{ and }183.9K

Explanation :

The conversion used for the temperature from Fahrenheit to degree Celsius is:

^oC=(^oF-32)\times \frac{5}{9}

where,

^oF = temperature in Fahrenheit

^oC = temperature in centigrade

The conversion used for the temperature from degree Celsius to Kelvin is:

K=273.15+^oC

where,

K = temperature in Kelvin

^oC = temperature in centigrade

As we are given the temperature in Fahrenheit is, -10

Now we have to determine the temperature in degree Celsius.

^oC=(^oF-32)\times \frac{5}{9}

^oC=(-128.6^oF-32)\times \frac{5}{9}

^oC=-89.2

Now we have to determine the temperature in Kelvin.

K=273.15+^oC

K=273.15+(-89.2^oC)

K=183.9

Therefore, the temperature in degree Celsius and Kelvin are, -89.2^oF\text{ and }183.9K

7 0
3 years ago
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Mamont248 [21]

Answer:

#3 is the percentage for sodium i believe and 4 is right

Explanation:

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3 years ago
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