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Sindrei [870]
3 years ago
10

How do the scientist know that cells exist

Chemistry
1 answer:
IrinaVladis [17]3 years ago
7 0
Because of us and other cells from plants and Animals
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What is the charge of (NH3) and also what is the charge of Se
Irina-Kira [14]

Answer:

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3 years ago
An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are ____.
adell [148]

The mass of an atom comes from the protons and neutrons that are found in the nucleus. The number of protons is the atomic number of an element. To find the number of neutrons, subtract the atomic number from the mass of an atom. So, if an element is 76, the number of protons AND electrons is also 76. 

8 0
4 years ago
Which of the following is the strongest acid? (a) CH,CH,CO,H (6) CH,CH, (c) CH.CH,OH (d) CH-CH,
Makovka662 [10]

Hey there :

Correct answer is :

(a) CH₃CH₂CO₂H

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4 0
3 years ago
Which type of bond will most likely be found in HBr?
NARA [144]
<span>HBr is covalent bond.!

</span>Hydrogen and Bromine will share their electrons, to obtain the electron configuration of a noble gas<span>.
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6 0
3 years ago
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What is “the process in which electrons are rearranged without direct contact”???
Anastasy [175]

Answer:

Induction

Explanation:

When a body is brought in contact with another, electrons are rearranged by contact.

When a body is rubbed against one another, charging by friction occurs.

The process whereby electrons are rearranged without direct contact with one another is called induction.

By induction electrons can get charged without them having to be in contact with one another.

  • When a charged body is brought to the vicinity of the electrons, either an attraction or repulsion force is set up.
  • Similar charges causes repulsion
  • If a negatively charged body is brought near the electrons, there would be heavy repulsion and the electrons would be forced to rearranged.
  • This effect is product as a result of a force field.
7 0
3 years ago
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