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Sloan [31]
3 years ago
11

Which atom is abundant in the universe​

Chemistry
1 answer:
kari74 [83]3 years ago
7 0

Answer:

hydrogen is abundant in nature

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Can someone help me with this one please :(
Step2247 [10]

turns red litmus paper because it is a acid

7 0
3 years ago
Sharon reads two different articles about avocados. The first article, in a weight-loss magazine, claims that avocados are unhea
ser-zykov [4K]

Answer:

Is the source an authority on the subject?

Explanation:

To figure out which source is accurate, you want to find out the source's authority on the subject. For  example, if you wanted to learn how to play the piano, you wouldn't go to a dance teacher, you would go to someone who knows how to play the piano. The person who knows how to play the piano has more authority to teach the piano than a dance teacher.

3 0
3 years ago
Which two particles are found in the center of an atom?
seraphim [82]

Answer:

B) Protons and Neutrons

Explanation:

In every atom, there is a Nucleus which contains protons and Neutrons. Protons being positive and Neutrons not having a charge (neutral).  

6 0
3 years ago
Read 2 more answers
The pka value for the carboxylic acid group in acetic acid is 4.75. write the predominant structure of acetic acid at (a ph=1, (
Scorpion4ik [409]
Hello!

A) At pH=1

This pH is lower than the value for the pKa, so Acetic acid wouldn't be ionized, but the equilibrium would be displaced to CH₃COOH

CH₃COOH ⇄ CH₃COO⁻ + H₃O⁺ (equilibrium displaced to the left)

The chemical structure for CH₃COOH is the first one in the attached images.

B) At pH=7

This pH is higher than the value for the pKa, so Acetic acid would be ionized, and the equilibrium would be displaced to CH₃COO⁻

CH₃COOH ⇄ CH₃COO⁻ + H₃O⁺ (equilibrium displaced to the right)

The chemical structure for CH₃COO⁻ is the second one in the attached images.

Have a nice day!

7 0
3 years ago
What is the 7th element on the periodic table?
aniked [119]
Nitrogen

Hope this helps!
4 0
3 years ago
Read 2 more answers
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