1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alina [70]
3 years ago
9

Which scientist is created with developing the first scientific atomic theory

Chemistry
1 answer:
Alona [7]3 years ago
8 0
John Dalton was the first scientist
You might be interested in
Michelle is trying to find the average atomic mass of a sample of an unknown
GREYUIT [131]

The average atomic mass of her sample is 114.54 amu

Let the 1st isotope be A

Let the 2nd isotope be B

From the question given above, the following data were obtained:

  • Abundance of isotope A (A%) = 59.34%
  • Mass of isotope A = 113.6459 amu
  • Mass of isotope B = 115.8488 amu
  • Abundance of isotope B (B%) = 100 – 59.34 = 40.66%
  • Average atomic mass =?

The average atomic mass of the sample can be obtained as follow:

Average \: atomic \: mass \:  =  \frac{mass \: of \: A \times A\%}{100}  + \frac{mass \: of \: B \times B\%}{100}  \\  \\ Average \: atomic \: mass \:  =  \frac{113.6459\times 59.34}{100} + \frac{115.8488\times 40.66}{100} \\  \\ Average \: atomic \: mass \:  = 114.54 \: amu  \\  \\

Thus, the average atomic mass of the sample is 114.54 amu

Learn more about isotope: brainly.com/question/25868336

3 0
2 years ago
What is a non-example for an Electric circuit?
Mademuasel [1]

Answer:

Impressionist paintings are a non-example of electric circuits.

Explanation:

hope this helped

4 0
2 years ago
Read 2 more answers
Two liquids – one polar, one nonpolar – have the same molar mass. which one has the higher boiling point?
Anton [14]
Polar will always have the higher boiling point because they have strong van der waal forces

7 0
3 years ago
What is the pH of a solution in which [H 3O +] = 3.8 × 10 -8 M?
7nadin3 [17]

Answer:

<h3>The answer is 7.42 </h3>

Explanation:

The pH of a solution can be found by using the formula

pH = - log [ { H_3O}^{+}]

From the question we have

pH =  -  log(3.8 \times  {10}^{ - 8} )  \\  = 7.420216...

We have the final answer as

<h3>7.42 </h3>

Hope this helps you

4 0
2 years ago
Which of the following is NOT a compound?<br> Table salt<br> Carbon dioxide<br> Water<br> Gold
Igoryamba

Answer: Gold.

Explanation: Water, CO2, and table salt are compounds. They are composed of two or more separate elements; a mixture, where as gold is neither.

3 0
2 years ago
Read 2 more answers
Other questions:
  • A molecule of carbon dioxide (co2) is formed when one atom of carbon (atomic number 6) is covalently bonded with two atoms of ox
    7·1 answer
  • A preliminary untested explanation that tries to explain how or why things happen in the manner observed is a scientific
    6·2 answers
  • Is mixing salt and pepper physical or chemical change ?
    13·1 answer
  • Who is responsible for proposing an influential model of working memory featuring a three-part system that allows individuals to
    10·1 answer
  • How did music change during medieval, renaissance and baroque eras​
    5·1 answer
  • The Lewis structure for methane, CH4 is shown. How many valence electrons does each hydrogen atom in the molecule have?​
    9·1 answer
  • According to the dichotomous key, organism 2 is a
    8·2 answers
  • Which of the following statements is true?
    6·2 answers
  • What is the frequency of electromagnetic radiation with a wavelength of 6.34 x 10^8 m?
    8·1 answer
  • The blood carries nutrients to where they are needed. True False
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!