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Mamont248 [21]
3 years ago
14

PLEASE HELP PLEASE!!ASAP!

Chemistry
1 answer:
MariettaO [177]3 years ago
7 0

Answer:

The mass of oxygen will be 19.53g

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Please help thank you (15 points)
sashaice [31]

Answer:

If the answer helps you PLEASE mark me as brainliest

Stay Safe, Stay Happy And stay healthy

6 0
2 years ago
Based on patterns in the periodic table, which ion has a stable valence electron configuration?
kifflom [539]

The ions of Noble gases, <em>group VIII</em> elements have a full octet configuration on their outermost shell and as such are highly stable.

The periodic table is a systematic arrangement of elements in order of their atomic numbers into a set of 8 columns each called groups and a set of 7 rows each called a period.

Elements are arranged in different groups according to the number of Valence electrons they have.

  • For instance, elements in the group I of the periodic table are highly electropositive and as such are highly reactive.

The same is evident in group 7 elements are highly electronegative and have high electron affinity and as such are unstable and reactive.

  • However, Noble gases, <em>group VIII</em> elements have a full octet configuration on their outermost shell and as such are highly stable.

Consequently, the <em>Noble gases ion</em> has a stable Valence electron configuration.

Read more:

brainly.com/question/5336231

4 0
3 years ago
When the plutonium bomb was tested in New Mexico in 1945, approximately 1 gram of matter was converted into energy. Suppose anot
stiv31 [10]

Answer:

See explanation

Explanation:

Given Einstein's theory of relativity, we have that;

E= mc^2

m= mass of the substance

c= speed of light

For one gram of the substance,

E= 1 ×10^-3 × (3 × 10^8)^2

E = 9 × 10^13 J

For 8.7 g of matter;

E = 8.7 × 10^-3× (3 × 10^8)

E= 7.83 ×10^ 14 J

6 0
3 years ago
Please answer
yKpoI14uk [10]
Long wave I think is the correct answer
7 0
3 years ago
Air is an example of a mixture because the elements and compounds that make up air retain their individual properties. True Fals
Helga [31]

i believe its true bc ik for sure air is a homogenous mixture

8 0
2 years ago
Read 2 more answers
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